South America
Adolf's catfish
Corydoras adolfoi
Temp22–26°C
pH6–7
Size5.7 cm
DietOmnivore
SwimBottom
DifficultyModerate
Adolf's catfish
Corydoras adolfoi
fish
Fish suited to mild acidic water (around pH 6.5)
Species whose documented pH range includes 6.5 — overlap check only; always acclimate and measure your own water.
184 species
- South America
Agassiz's dwarf cichlid
Apistogramma agassizii
Temp22–29°CpH5–7Size4.4 cmDietCarnivoreSwimBottomDifficultyModerateAgassiz's dwarf cichlid
Apistogramma agassizii
- Asia
Almorha loach
Botia almorhae
Temp19–27.5°CpH6.5–7.5Size15.5 cmDietOmnivoreSwimBottomDifficultyModerateAlmorha loach
Botia almorhae
- Japan, Taiwan, Korea
Amano Shrimp
Caridina multidentata
Temp18–28°CpH6.5–7.5Size5 cmDietHerbivoreSwimAll levelsDifficultyEasyAmano Shrimp
Caridina multidentata
- South America
Arawana
Osteoglossum bicirrhosum
Temp20–30°CpH5–7.5Size80 cmDietCarnivoreSwimTopDifficultyExpertArawana
Osteoglossum bicirrhosum
- Southeast Asia
Asian bumblebee catfish
Pseudomystus siamensis
Temp22–26°CpH6–7.5Size18 cmDietCarnivoreSwimBottomDifficultyModerateAsian bumblebee catfish
Pseudomystus siamensis
- Asia
Asian Stone Catfish
Hara jerdoni
Temp18–24°CpH6–7.5Size4 cmDietOmnivoreSwimBottomDifficultyModerateAsian Stone Catfish
Hara jerdoni
- Asia
Assamese snakehead
Channa stewartii
Temp18–25°CpH6.5–7.5Size29.7 cmDietCarnivoreSwimMiddleDifficultyModerateAssamese snakehead
Channa stewartii
- Asia
Badis
Badis badis
Temp20–26°CpH6–8Size7.1 cmDietOmnivoreSwimMiddleDifficultyModerateBadis
Badis badis
- Southeast Asia (Indonesia, Malaysia, Thailand)
Bamboo Shrimp
Atyopsis moluccensis
Temp22–28°CpH6.5–7.5Size10 cmDietDetritivoreSwimBottomDifficultyModerateBamboo Shrimp
Atyopsis moluccensis
- West Africa
Banded panchax
Epiplatys annulatus
Temp23–26°CpH5.5–7Size3.5 cmDietInsectivoreSwimTopDifficultyModerateBanded panchax
Epiplatys annulatus
- Asia
Beaufortia
Beaufortia pingi
Temp18–24°CpH6.5–7.5Size7.4 cmDietHerbivoreSwimBottomDifficultyModerateBeaufortia
Beaufortia pingi
- South America
Bigtooth river stingray
Potamotrygon henlei
Temp24–28°CpH5.8–7.2Size45 cmDietOmnivoreSwimBottomDifficultyExpertBigtooth river stingray
Potamotrygon henlei
- South America (Brazil, Colombia, Guyana)
Black Arowana
Osteoglossum ferreirae
Temp24–30°CpH5–6.5Size80 cmDietCarnivoreSwimMiddleDifficultyExpertBlack Arowana
Osteoglossum ferreirae
- South America
Black ghost
Apteronotus albifrons
Temp23–28°CpH6–8Size50 cmDietCarnivoreSwimBottomDifficultyModerateBlack ghost
Apteronotus albifrons
- South America
Black neon tetra
Hyphessobrycon herbertaxelrodi
Temp20–28°CpH5–7.5Size3.2 cmDietOmnivoreSwimMiddleDifficultyEasyBlack neon tetra
Hyphessobrycon herbertaxelrodi
- South America
Black phantom tetra
Hyphessobrycon megalopterus
Temp22–26°CpH6–7.5Size3.6 cmDietOmnivoreSwimMiddleDifficultyModerateBlack phantom tetra
Hyphessobrycon megalopterus
- Asia
Black ruby barb
Pethia nigrofasciata
Temp20–27°CpH5.5–7.5Size5.5 cmDietOmnivoreSwimMiddleDifficultyEasyBlack ruby barb
Pethia nigrofasciata
- South America
Black tetra
Gymnocorymbus ternetzi
Temp20–26°CpH6–8Size7.5 cmDietOmnivoreSwimMiddleDifficultyEasyBlack tetra
Gymnocorymbus ternetzi
- South America
Blackline penguinfish
Thayeria boehlkei
Temp22–28°CpH5.5–8Size6 cmDietOmnivoreSwimMiddleDifficultyModerateBlackline penguinfish
Thayeria boehlkei
- Asia
Blackline rasbora
Rasbora borapetensis
Temp22–26°CpH6–7.5Size5 cmDietOmnivoreSwimMiddleDifficultyModerateBlackline rasbora
Rasbora borapetensis
- South America
Bleeding-heart tetra
Hyphessobrycon erythrostigma
Temp23–28°CpH5.6–7.2Size6.1 cmDietOmnivoreSwimMiddleDifficultyModerateBleeding-heart tetra
Hyphessobrycon erythrostigma
- South America
Blue acara
Andinoacara pulcher var.
Temp22–28°CpH6.5–8Size16 cmDietOmnivoreSwimMiddleDifficultyModerateBlue acara
Andinoacara pulcher var.
- Asia
Blue Belly Goby
Stiphodon percnopterygionus
Temp22–26°CpH6.5–7.5Size5 cmDietHerbivoreSwimBottomDifficultyModerateBlue Belly Goby
Stiphodon percnopterygionus
- Asia
Blue danio
Brachydanio kerri
Temp18–26°CpH6.5–7.5Size4.5 cmDietOmnivoreSwimMiddleDifficultyEasyBlue danio
Brachydanio kerri
- Africa
Blue gularis
Fundulopanchax sjostedti
Temp22–26°CpH6–8Size13 cmDietCarnivoreSwimMiddleDifficultyModerateBlue gularis
Fundulopanchax sjostedti
- Africa
Blue lyretail
Fundulopanchax gardneri
Temp22–26°CpH6–7.2Size6.5 cmDietOmnivoreSwimAll levelsDifficultyModerateBlue lyretail
Fundulopanchax gardneri
- Taiwan (selectively bred)
Blue Velvet Shrimp
Neocaridina davidi var. blue
Temp18–28°CpH6.5–8Size3 cmDietOmnivoreSwimMiddleDifficultyModerateBlue Velvet Shrimp
Neocaridina davidi var. blue
- South America
Blue-eye panaque
Panaque suttonorum
Temp22–26°CpH6.2–7.5Size28 cmDietHerbivoreSwimBottomDifficultyModerateBlue-eye panaque
Panaque suttonorum
- Asia
Bluefinned snakehead
Channa bleheri
Temp18–25°CpH6–7.5Size14.4 cmDietCarnivoreSwimMiddleDifficultyModerateBluefinned snakehead
Channa bleheri
- South America
Bolivian Ram
Mikrogeophagus altispinosus
Temp24–28°CpH6–7.5Size8 cmDietOmnivoreSwimMiddleDifficultyModerateBolivian Ram
Mikrogeophagus altispinosus
- Borneo (Southeast Asia)
Borneo Loach
Pangio shelfordii
Temp24–29°CpH6–7Size8 cmDietOmnivoreSwimMiddleDifficultyModerateBorneo Loach
Pangio shelfordii
- South America
Bronze corydoras
Corydoras aeneus
Temp22–26°CpH6–8Size7.5 cmDietOmnivoreSwimBottomDifficultyEasyBronze corydoras
Corydoras aeneus
- South America
Buenos Aires tetra
Hyphessobrycon anisitsi
Temp16–28°CpH5.5–8.5Size6 cmDietOmnivoreSwimMiddleDifficultyModerateBuenos Aires tetra
Hyphessobrycon anisitsi
- North America
Butterfly splitfin
Ameca splendens
Temp20–26°CpH6–8Size8 cmDietOmnivoreSwimMiddleDifficultyModerateButterfly splitfin
Ameca splendens
- Asia
Checkered barb
Oliotius oligolepis
Temp18–25°CpH5.5–7.5Size4.5 cmDietOmnivoreSwimMiddleDifficultyEasyCheckered barb
Oliotius oligolepis
- Asia
Chen Hillstream Loach
Pseudogastromyzon cheni
Temp15–24°CpH6.5–7.5Size5 cmDietOmnivoreSwimBottomDifficultyModerateChen Hillstream Loach
Pseudogastromyzon cheni
- Asia
Cherry barb
Puntius titteya
Temp20–27°CpH6–8Size5 cmDietOmnivoreSwimMiddleDifficultyModerateCherry barb
Puntius titteya
- Taiwan (selectively bred from wild Neocaridina davidi)
Cherry Shrimp
Neocaridina davidi
Temp18–28°CpH6.5–8Size3 cmDietOmnivoreSwimBottomDifficultyEasyCherry Shrimp
Neocaridina davidi
- South America
Chessboard cichlid
Dicrossus filamentosus
Temp27–30°CpH4.5–7Size10 cmDietOmnivoreSwimBottomDifficultyModerateChessboard cichlid
Dicrossus filamentosus
- Asia
Chili Rasbora
Boraras brigittae
Temp24–28°CpH6.5–7Size3.5 cmDietOmnivoreSwimMiddleDifficultyEasyChili Rasbora
Boraras brigittae
- Asia
Chinese barb
Barbodes semifasciolatus
Temp16–24°CpH6–8Size7.5 cmDietOmnivoreSwimMiddleDifficultyEasyChinese barb
Barbodes semifasciolatus
- Asia
Chocolate gourami
Sphaerichthys osphromenoides
Temp26–31°CpH4–6.5Size5 cmDietCarnivoreSwimMiddleDifficultyModerateChocolate gourami
Sphaerichthys osphromenoides
- Asia
Clown loach
Chromobotia macracanthus
Temp25–30°CpH5–8Size30.5 cmDietOmnivoreSwimBottomDifficultyModerateClown loach
Chromobotia macracanthus
- Asia
Clown rasbora
Rasbora kalochroma
Temp23–28°CpH5–7.5Size10 cmDietOmnivoreSwimMiddleDifficultyModerateClown rasbora
Rasbora kalochroma
- South America
Cockatoo cichlid
Apistogramma cacatuoides
Temp22–29°CpH6–8Size5 cmDietCarnivoreSwimBottomDifficultyEasyCockatoo cichlid
Apistogramma cacatuoides
- South America
Colombian Tetra
Hyphessobrycon columbianus
Temp24–28°CpH6–7.5Size7 cmDietOmnivoreSwimMiddleDifficultyModerateColombian Tetra
Hyphessobrycon columbianus
- Asia
Colored snakehead
Channa pulchra
Temp18–25°CpH6–7.5Size30 cmDietCarnivoreSwimBottomDifficultyExpertColored snakehead
Channa pulchra
- Africa
Congo tetra
Phenacogrammus interruptus
Temp23–28°CpH6–7.5Size8 cmDietOmnivoreSwimMiddleDifficultyModerateCongo tetra
Phenacogrammus interruptus
- Central America
Convict cichlid
Amatitlania nigrofasciata
Temp24–28°CpH6–8Size10 cmDietOmnivoreSwimBottomDifficultyEasyConvict cichlid
Amatitlania nigrofasciata
- Asia
Coolie loach
Pangio kuhlii
Temp24–29°CpH5.5–6.5Size12 cmDietOmnivoreSwimBottomDifficultyModerateCoolie loach
Pangio kuhlii
- Asia
Crescent betta
Betta imbellis
Temp20–28°CpH5–7.5Size5.5 cmDietCarnivoreSwimTopDifficultyModerateCrescent betta
Betta imbellis
- Asia
Daisy's Rice Fish
Oryzias woworae
Temp23–27°CpH6–7.5Size2.8 cmDietOmnivoreSwimMiddleDifficultyModerateDaisy's Rice Fish
Oryzias woworae
- South America
Demon eartheater
Satanoperca jurupari
Temp26–30°CpH6.3–7Size26 cmDietOmnivoreSwimBottomDifficultyModerateDemon eartheater
Satanoperca jurupari
- South America
Diamond tetra
Moenkhausia pittieri
Temp24–28°CpH5.5–7Size6 cmDietOmnivoreSwimMiddleDifficultyModerateDiamond tetra
Moenkhausia pittieri
- Asia
Dwarf danio
Danio nigrofasciatus
Temp18–26°CpH6.5–7.5Size3.7 cmDietOmnivoreSwimMiddleDifficultyEasyDwarf danio
Danio nigrofasciatus
- South Asia (Pakistan, India, Bangladesh)
Dwarf gourami
Trichogaster lalius
Temp22–27°CpH6–7.5Size8.8 cmDietOmnivoreSwimMiddleDifficultyModerateDwarf gourami
Trichogaster lalius
- Asia
Dwarf rasbora
Boraras maculatus
Temp20–28°CpH5–6.5Size2.5 cmDietOmnivoreSwimMiddleDifficultyModerateDwarf rasbora
Boraras maculatus
- Africa
Elephantnose fish
Gnathonemus petersii
Temp23–28°CpH6–7.5Size22.5 cmDietInsectivoreSwimBottomDifficultyModerateElephantnose fish
Gnathonemus petersii
- South America
Ember tetra
Hyphessobrycon amandae
Temp20–28°CpH5–7Size2 cmDietOmnivoreSwimMiddleDifficultyEasyEmber tetra
Hyphessobrycon amandae
- Asia
Eyespot pufferfish
Tetraodon biocellatus
Temp22.2–26.1°CpH6.5–7.5Size8 cmDietOmnivoreSwimMiddleDifficultyModerateEyespot pufferfish
Tetraodon biocellatus
- South America
Farlowella Catfish
Farlowella vittata
Temp24–28°CpH6–7Size22.5 cmDietHerbivoreSwimBottomDifficultyModerateFarlowella Catfish
Farlowella vittata
- Asia
Finescale tigerfish
Datnioides microlepis
Temp20–28°CpH5.5–7.5Size50 cmDietCarnivoreSwimMiddleDifficultyModerateFinescale tigerfish
Datnioides microlepis
- Asia
Fire eel
Mastacembelus erythrotaenia
Temp24–28°CpH6–8Size100 cmDietCarnivoreSwimBottomDifficultyModerateFire eel
Mastacembelus erythrotaenia
- Central America
Firemouth cichlid
Thorichthys meeki
Temp20–32°CpH6.5–8.5Size12 cmDietOmnivoreSwimBottomDifficultyModerateFiremouth cichlid
Thorichthys meeki
- Asia
Fiveband barb
Desmopuntius pentazona
Temp21–26°CpH4–7Size5.5 cmDietOmnivoreSwimMiddleDifficultyEasyFiveband barb
Desmopuntius pentazona
- Asia
Flying fox
Epalzeorhynchos kalopterum
Temp20–26°CpH6–7.5Size16 cmDietOmnivoreSwimBottomDifficultyModerateFlying fox
Epalzeorhynchos kalopterum
- Oceania
Forktail rainbowfish
Pseudomugil furcatus
Temp—pH6–8Size5 cmDietOmnivoreSwimMiddleDifficultyModerateForktail rainbowfish
Pseudomugil furcatus
- South America
Freshwater angelfish
Pterophyllum scalare
Temp24–30°CpH6–7.5Size15 cmDietOmnivoreSwimMiddleDifficultyModerateFreshwater angelfish
Pterophyllum scalare
- Africa
Freshwater butterflyfish
Pantodon buchholzi
Temp25–30°CpH6–7.5Size11.9 cmDietInsectivoreSwimTopDifficultyModerateFreshwater butterflyfish
Pantodon buchholzi
- Asia
Galaxy rasbora
Danio margaritatus
Temp20–26°CpH6.5–7.5Size2.1 cmDietOmnivoreSwimMiddleDifficultyEasyGalaxy rasbora
Danio margaritatus
- Southeastern United States
Ghost shrimp
Palaemon paludosus
Temp18–28°CpH6.5–8Size4 cmDietOmnivoreSwimMiddleDifficultyEasyGhost shrimp
Palaemon paludosus
- Asia
Giant danio
Devario aequipinnatus
Temp22–27°CpH6–8Size15 cmDietOmnivoreSwimAll levelsDifficultyModerateGiant danio
Devario aequipinnatus
- South America
Giant Whiptail
Sturisoma aureum
Temp24–28°CpH6–8Size20 cmDietOmnivoreSwimBottomDifficultyModerateGiant Whiptail
Sturisoma aureum
- South America
Glass bloodfin
Prionobrama filigera
Temp23–27°CpH6–7.5Size6 cmDietOmnivoreSwimTopDifficultyEasyGlass bloodfin
Prionobrama filigera
- Asia
Glass catfish
Kryptopterus vitreolus
Temp20–26°CpH4–7Size6.5 cmDietCarnivoreSwimTopDifficultyModerateGlass catfish
Kryptopterus vitreolus
- Africa
Globe fish
Tetraodon lineatus
Temp24–26°CpH6.5–7.5Size43 cmDietCarnivoreSwimBottomDifficultyExpertGlobe fish
Tetraodon lineatus
- Asia
Glowlight Danio
Danio choprae
Temp16–26°CpH6.5–7.5Size3.1 cmDietOmnivoreSwimMiddleDifficultyModerateGlowlight Danio
Danio choprae
- South America
Glowlight tetra
Hemigrammus erythrozonus
Temp24–28°CpH5.5–7.5Size4 cmDietOmnivoreSwimMiddleDifficultyEasyGlowlight tetra
Hemigrammus erythrozonus
- South America
Gold Nugget Pleco
Baryancistrus xanthellus
Temp25–30°CpH6–7.5Size29.7 cmDietOmnivoreSwimBottomDifficultyModerateGold Nugget Pleco
Baryancistrus xanthellus
- Asia
Gold Ring Danio
Brachydanio tinwini
Temp18–26°CpH6.5–7.5Size3 cmDietOmnivoreSwimTopDifficultyModerateGold Ring Danio
Brachydanio tinwini
- South America
Gold severum
Heros efasciatus var.
Temp22–29°CpH5–6.5Size20 cmDietOmnivoreSwimMiddleDifficultyModerateGold severum
Heros efasciatus var.
- Asia
Goldspotted snakehead
Channa aurantimaculata
Temp22–26°CpH6–7.5Size45 cmDietCarnivoreSwimBottomDifficultyExpertGoldspotted snakehead
Channa aurantimaculata
- Africa
Gray bichir
Polypterus senegalus
Temp—pH6–8Size70 cmDietCarnivoreSwimBottomDifficultyModerateGray bichir
Polypterus senegalus
- South America
Green terror
Andinoacara rivulatus
Temp20–24°CpH6.5–8Size30 cmDietOmnivoreSwimMiddleDifficultyModerateGreen terror
Andinoacara rivulatus
- South America
Greenstreaked eartheater
Biotodoma cupido
Temp23–28°CpH5–7Size11.7 cmDietCarnivoreSwimMiddleDifficultyModerateGreenstreaked eartheater
Biotodoma cupido
- South America
Guitarrita
Bunocephalus coracoideus
Temp20–27°CpH5.8–7.8Size15 cmDietOmnivoreSwimBottomDifficultyModerateGuitarrita
Bunocephalus coracoideus
- Asia
Harlequin rasbora
Trigonostigma heteromorpha
Temp21–28°CpH5–7.5Size4.5 cmDietOmnivoreSwimMiddleDifficultyEasyHarlequin rasbora
Trigonostigma heteromorpha
- South America
Head-and-taillight tetra
Hemigrammus ocellifer
Temp24–28°CpH5.5–7.5Size4.5 cmDietOmnivoreSwimMiddleDifficultyModerateHead-and-taillight tetra
Hemigrammus ocellifer
- Asia
Hillstream loach
Gastromyzon punctulatus
Temp23–25°CpH6.5–7.5Size6.5 cmDietOmnivoreSwimBottomDifficultyModerateHillstream loach
Gastromyzon punctulatus
- Oceania
Honey blue eye
Pseudomugil mellis
Temp20–28°CpH6–7.5Size3.5 cmDietOmnivoreSwimMiddleDifficultyModerateHoney blue eye
Pseudomugil mellis
- Asia
Honey gourami
Trichogaster chuna
Temp22–27°CpH6–8Size13.7 cmDietOmnivoreSwimMiddleDifficultyModerateHoney gourami
Trichogaster chuna
- South America
Hoplo Catfish
Megalechis thoracata
Temp18–28°CpH6–8Size15.5 cmDietOmnivoreSwimBottomDifficultyEasyHoplo Catfish
Megalechis thoracata
- Asia
Horsehead
Opsariichthys bidens
Temp5–24°CpH6.5–8Size26.1 cmDietOmnivoreSwimMiddleDifficultyModerateHorsehead
Opsariichthys bidens
- Asia
Indonesian snakehead
Channa micropeltes
Temp24–30°CpH6–8Size130 cmDietCarnivoreSwimMiddleDifficultyHardIndonesian snakehead
Channa micropeltes
- Asia
Japanese rice fish
Oryzias latipes
Temp16–22°CpH6.5–8.5Size3.6 cmDietOmnivoreSwimAll levelsDifficultyModerateJapanese rice fish
Oryzias latipes
- South America
Jewel tetra
Hyphessobrycon eques
Temp20–28°CpH5–7.8Size4 cmDietOmnivoreSwimMiddleDifficultyModerateJewel tetra
Hyphessobrycon eques
- Africa
Jewelfish
Hemichromis bimaculatus
Temp22–28°CpH6.5–7.5Size13.6 cmDietOmnivoreSwimMiddleDifficultyModerateJewelfish
Hemichromis bimaculatus
- Southeast Asia
Kissing gourami
Helostoma temminckii
Temp22–30°CpH6–8Size30 cmDietOmnivoreSwimMiddleDifficultyModerateKissing gourami
Helostoma temminckii
- Asia
Least rasbora
Boraras urophthalmoides
Temp24–28°CpH6–7Size2 cmDietOmnivoreSwimMiddleDifficultyEasyLeast rasbora
Boraras urophthalmoides
- South America
Lemon tetra
Hyphessobrycon pulchripinnis
Temp20–28°CpH5–7.5Size3.8 cmDietOmnivoreSwimMiddleDifficultyModerateLemon tetra
Hyphessobrycon pulchripinnis
- South America
Leopard corydoras
Corydoras julii
Temp20–26°CpH6–8Size5.5 cmDietOmnivoreSwimBottomDifficultyEasyLeopard corydoras
Corydoras julii
- South America
Leopard Frog Pleco
Peckoltia compta
Temp24–29°CpH6–7.5Size6.2 cmDietOmnivoreSwimBottomDifficultyModerateLeopard Frog Pleco
Peckoltia compta
- Asia
Lizard Loach
Homaloptera orthogoniata
Temp20–25°CpH6–7.5Size9.5 cmDietOmnivoreSwimBottomDifficultyModerateLizard Loach
Homaloptera orthogoniata
- Madagascar
Madagascar Rainbow
Bedotia madagascarensis
Temp—pH4.5–7.5Size10 cmDietOmnivoreSwimMiddleDifficultyModerateMadagascar Rainbow
Bedotia madagascarensis
- South America
Medusa Pleco
Ancistrus ranunculus
Temp22–26°CpH6–7Size19.5 cmDietHerbivoreSwimBottomDifficultyModerateMedusa Pleco
Ancistrus ranunculus
- Sri Lanka
Melon Barb
Pethia fasciata
Temp22–26°CpH6–7Size8 cmDietOmnivoreSwimMiddleDifficultyModerateMelon Barb
Pethia fasciata
- Asia
Microdevario
Microdevario microphthalma
Temp20–26°CpH6.5–7.5Size2.6 cmDietInsectivoreSwimMiddleDifficultyEasyMicrodevario
Microdevario microphthalma
- Asia
Neon Blue Rasbora
Sundadanio axelrodi
Temp23–26°CpH4–6.5Size2.5 cmDietOmnivoreSwimMiddleDifficultyHardNeon Blue Rasbora
Sundadanio axelrodi
- South America
Neon tetra
Paracheirodon innesi
Temp21–25°CpH5–7Size2.5 cmDietOmnivoreSwimMiddleDifficultyEasyNeon tetra
Paracheirodon innesi
- Asia
Orange Fin Danio
Danio kyathit
Temp16–26°CpH6.5–7.5Size4.5 cmDietCarnivoreSwimMiddleDifficultyEasyOrange Fin Danio
Danio kyathit
- South America
Ornate tetra
Hyphessobrycon bentosi
Temp20–28°CpH5–7.5Size4.3 cmDietOmnivoreSwimMiddleDifficultyModerateOrnate tetra
Hyphessobrycon bentosi
- South America
Oscar
Astronotus ocellatus
Temp20–28°CpH6–7.5Size35 cmDietOmnivoreSwimMiddleDifficultyModerateOscar
Astronotus ocellatus
- South America
Otocinclus
Otocinclus vittatus
Temp21–26°CpH6–7.5Size3.3 cmDietHerbivoreSwimBottomDifficultyEasyOtocinclus
Otocinclus vittatus
- South America
Oxyropsis
Oxyropsis carinata
Temp24–28°CpH6–7.5Size7.6 cmDietOmnivoreSwimBottomDifficultyMediumOxyropsis
Oxyropsis carinata
- South America
Palespotted corydoras
Corydoras gossei
Temp24–28°CpH5.5–7.5Size5.5 cmDietOmnivoreSwimBottomDifficultyEasyPalespotted corydoras
Corydoras gossei
- South America
Panda corydoras
Corydoras panda
Temp22–26°CpH6–8Size3.8 cmDietOmnivoreSwimBottomDifficultyEasyPanda corydoras
Corydoras panda
- Asia
Panda Garra
Garra flavatra
Temp22–27°CpH6.5–7.5Size9 cmDietOmnivoreSwimMiddleDifficultyModeratePanda Garra
Garra flavatra
- Asia
Panda Loach
Yaoshania pachychilus
Temp20–24°CpH6.5–7.5Size5.8 cmDietOmnivoreSwimMiddleDifficultyModeratePanda Loach
Yaoshania pachychilus
- South America
Panda Uaru
Uaru fernandezyepezi
Temp27–30°CpH5–6.5Size19 cmDietOmnivoreSwimMiddleDifficultyModeratePanda Uaru
Uaru fernandezyepezi
- South America
Parotocinclus
Parotocinclus eppleyi
Temp22–26°CpH6–7Size3 cmDietOmnivoreSwimBottomDifficultyModerateParotocinclus
Parotocinclus eppleyi
- Asia
Peacock eel
Macrognathus siamensis
Temp23–28°CpH6–7.5Size30 cmDietCarnivoreSwimBottomDifficultyModeratePeacock eel
Macrognathus siamensis
- Southeast Asia (Thailand, Malaysia, Indonesia)
Pearl gourami
Trichopodus leerii
Temp23.9–30°CpH5.5–8Size12 cmDietOmnivoreSwimMiddleDifficultyModeratePearl gourami
Trichopodus leerii
- South America
Peppered corydoras
Corydoras paleatus
Temp22–26°CpH6–7Size7 cmDietOmnivoreSwimBottomDifficultyEasyPeppered corydoras
Corydoras paleatus
- South America
Pictus cat
Pimelodus pictus
Temp22–26°CpH6–8Size11 cmDietOmnivoreSwimBottomDifficultyModeratePictus cat
Pimelodus pictus
- Asia
Pond loach
Misgurnus anguillicaudatus
Temp18–23°CpH6.5–8Size28 cmDietOmnivoreSwimBottomDifficultyModeratePond loach
Misgurnus anguillicaudatus
- South America
Pygmy corydoras
Corydoras pygmaeus
Temp22–26°CpH6–8Size2.1 cmDietOmnivoreSwimBottomDifficultyEasyPygmy corydoras
Corydoras pygmaeus
- Asia
Pygmy gourami
Trichopsis pumila
Temp22–28°CpH5–7.5Size4 cmDietOmnivoreSwimMiddleDifficultyModeratePygmy gourami
Trichopsis pumila
- Africa
Rainbow krib
Pelvicachromis pulcher
Temp24–27°CpH5–7.5Size10 cmDietOmnivoreSwimMiddleDifficultyModerateRainbow krib
Pelvicachromis pulcher
- North America
Rainbow shiner
Notropis chrosomus
Temp10–22°CpH6.5–7.5Size8 cmDietOmnivoreSwimMiddleDifficultyModerateRainbow shiner
Notropis chrosomus
- South America
Ram cichlid
Mikrogeophagus ramirezi
Temp27–30°CpH4–7Size4.2 cmDietOmnivoreSwimMiddleDifficultyModerateRam cichlid
Mikrogeophagus ramirezi
- Asia
Red Cherry Rasbora
Rasbora lacrimula
Temp22–26°CpH4–7.5Size3.1 cmDietInsectivoreSwimMiddleDifficultyEasyRed Cherry Rasbora
Rasbora lacrimula
- Asia
Red Neon Goby
Stiphodon atropurpureus
Temp22–26°CpH6.5–7.5Size5 cmDietHerbivoreSwimMiddleDifficultyModerateRed Neon Goby
Stiphodon atropurpureus
- South America
Red phantom tetra
Hyphessobrycon sweglesi
Temp20–28°CpH4.5–7.5Size3.2 cmDietOmnivoreSwimMiddleDifficultyModerateRed phantom tetra
Hyphessobrycon sweglesi
- Amazon basin, South America
Red Spotted Severum
Heros efasciatus var.
Temp24–29°CpH6–7.5Size20 cmDietOmnivoreSwimMiddleDifficultyModerateRed Spotted Severum
Heros efasciatus var.
- South America
Red Wolf Fish
Erythrinus erythrinus
Temp22–26°CpH5.5–7.5Size20 cmDietCarnivoreSwimBottomDifficultyExpertRed Wolf Fish
Erythrinus erythrinus
- South America
Redhump eartheater
Geophagus steindachneri
Temp20–30°CpH6–7.5Size15 cmDietOmnivoreSwimMiddleDifficultyModerateRedhump eartheater
Geophagus steindachneri
- South America
Redstriped eartheater
Geophagus surinamensis
Temp24–28°CpH6–7.5Size17.2 cmDietOmnivoreSwimBottomDifficultyModerateRedstriped eartheater
Geophagus surinamensis
- Asia
Reticulated hillstream loach
Sewellia lineolata
Temp18–24°CpH6.5–7.5Size5.7 cmDietOmnivoreSwimBottomDifficultyModerateReticulated hillstream loach
Sewellia lineolata
- Asia
Reticulated Sae
Crossocheilus reticulatus
Temp16–24°CpH6–7.5Size17 cmDietHerbivoreSwimMiddleDifficultyModerateReticulated Sae
Crossocheilus reticulatus
- Taiwan (selectively bred)
Rili Shrimp
Neocaridina davidi var. rili
Temp18–28°CpH6.5–8Size3 cmDietOmnivoreSwimMiddleDifficultyEasyRili Shrimp
Neocaridina davidi var. rili
- North America
Rio Grande cichlid
Herichthys cyanoguttatus
Temp—pH6.5–7.5Size30 cmDietOmnivoreSwimMiddleDifficultyModerateRio Grande cichlid
Herichthys cyanoguttatus
- Asia
Rosy barb
Pethia conchonius
Temp16–24°CpH6–8Size7.5 cmDietOmnivoreSwimMiddleDifficultyEasyRosy barb
Pethia conchonius
- South America
Rosy tetra
Hyphessobrycon rosaceus
Temp23.9–27.8°CpH5.5–7.5Size4 cmDietOmnivoreSwimMiddleDifficultyModerateRosy tetra
Hyphessobrycon rosaceus
- Colombia and Venezuela (Lake Maracaibo basin)
Royal Farlowella
Sturisomatichthys festivus
Temp24–28°CpH6–7.5Size16.9 cmDietHerbivoreSwimBottomDifficultyModerateRoyal Farlowella
Sturisomatichthys festivus
- South America
Royal panaque
Panaque nigrolineatus
Temp24–29°CpH6.5–7.5Size43 cmDietHerbivoreSwimBottomDifficultyModerateRoyal panaque
Panaque nigrolineatus
- Asia
Ruby barb
Pethia padamya
Temp20–25°CpH6.5–7.5Size4.6 cmDietOmnivoreSwimMiddleDifficultyModerateRuby barb
Pethia padamya
- South America
Rummy-nose tetra
Hemigrammus rhodostomus
Temp24–27°CpH5.5–7Size5 cmDietOmnivoreSwimMiddleDifficultyEasyRummy-nose tetra
Hemigrammus rhodostomus
- Myanmar (Lake Inlé)
Sawbwa barb
Sawbwa resplendens
Temp18–22°CpH6–8Size3 cmDietOmnivoreSwimMiddleDifficultyModerateSawbwa barb
Sawbwa resplendens
- Asia
Scarlet badis
Dario dario
Temp18–26°CpH6.5–8.5Size2 cmDietCarnivoreSwimMiddleDifficultyModerateScarlet badis
Dario dario
- South America
Schwartz's catfish
Corydoras schwartzi
Temp22–24°CpH6–7.5Size7 cmDietOmnivoreSwimBottomDifficultyModerateSchwartz's catfish
Corydoras schwartzi
- Asia
Siamese algae-eater
Gyrinocheilus aymonieri
Temp22–28°CpH6–8Size28 cmDietHerbivoreSwimMiddleDifficultyModerateSiamese algae-eater
Gyrinocheilus aymonieri
- Asia
Siamese fighting fish
Betta splendens var.
Temp24–30°CpH6–8Size6.5 cmDietCarnivoreSwimMiddleDifficultyModerateSiamese fighting fish
Betta splendens var.
- Asia
Siamese fighting fish
Betta splendens hybrid
Temp24–30°CpH6–7.5Size6.5 cmDietCarnivoreSwimAll levelsDifficultyEasySiamese fighting fish
Betta splendens hybrid
- Asia
Siamese fighting fish
Betta splendens
Temp22–30°CpH6–8Size6.5 cmDietOmnivoreSwimMiddleDifficultyModerateSiamese fighting fish
Betta splendens
- Asia
Siamese flying fox
Crossocheilus oblongus
Temp23–27°CpH6–7.5Size16 cmDietOmnivoreSwimMiddleDifficultyModerateSiamese flying fox
Crossocheilus oblongus
- South America
Silvertip tetra
Hasemania nana
Temp22–28°CpH6–8Size3.8 cmDiet—SwimMiddleDifficultyModerateSilvertip tetra
Hasemania nana
- Asia
Slender Bitterling
Tanakia himantegus
Temp15–28°CpH6.5–7.8Size8 cmDietOmnivoreSwimMiddleDifficultyModerateSlender Bitterling
Tanakia himantegus
- Asia
Small snakehead
Channa asiatica
Temp15–25°CpH6–8Size35 cmDietCarnivoreSwimBottomDifficultyExpertSmall snakehead
Channa asiatica
- Asia
Snakehead Betta
Betta channoides
Temp23–30°CpH4–6.5Size4 cmDietCarnivoreSwimMiddleDifficultyModerateSnakehead Betta
Betta channoides
- South America
Splash tetra
Copella arnoldi
Temp20–28°CpH4–7.5Size5.5 cmDietOmnivoreSwimMiddleDifficultyModerateSplash tetra
Copella arnoldi
- South America
Sterba's cory
Corydoras sterbai
Temp24–28°CpH6–7.6Size6.5 cmDietOmnivoreSwimBottomDifficultyEasySterba's cory
Corydoras sterbai
- Asia
Strawberry Rasbora
Boraras naevus
Temp24–28°CpH5–6.5Size1.3 cmDietOmnivoreSwimMiddleDifficultyEasyStrawberry Rasbora
Boraras naevus
- Asia
Striped panchax
Aplocheilus lineatus
Temp22–28°CpH6–7.5Size10 cmDietCarnivoreSwimTopDifficultyModerateStriped panchax
Aplocheilus lineatus
- Asia
Sumatra barb
Puntigrus tetrazona
Temp20–26°CpH5–8Size6 cmDietOmnivoreSwimMiddleDifficultyEasySumatra barb
Puntigrus tetrazona
- South America
Sunshine Pleco
Scobinancistrus aureatus
Temp25–29°CpH5.5–7Size29 cmDietOmnivoreSwimBottomDifficultyModerateSunshine Pleco
Scobinancistrus aureatus
- Oceania
Threadfin rainbowfish
Iriatherina werneri
Temp22–30°CpH5–8Size4 cmDietOmnivoreSwimMiddleDifficultyModerateThreadfin rainbowfish
Iriatherina werneri
- Asia
Three spot gourami
Trichogaster trichopterus
Temp24–30°CpH5.5–8.5Size15 cmDietOmnivoreSwimMiddleDifficultyModerateThree spot gourami
Trichogaster trichopterus
- Asia
Three-lined rasbora
Rasbora trilineata
Temp22–25°CpH6–8Size13 cmDietOmnivoreSwimMiddleDifficultyModerateThree-lined rasbora
Rasbora trilineata
- Southeast Asia
Tinfoil barb
Barbonymus schwanenfeldii
Temp22–28°CpH6.5–7Size35 cmDietOmnivoreSwimMiddleDifficultyModerateTinfoil barb
Barbonymus schwanenfeldii
- South America
Twosaddle corydoras
Corydoras weitzmani
Temp22–26°CpH6–7.2Size6 cmDietOmnivoreSwimBottomDifficultyModerateTwosaddle corydoras
Corydoras weitzmani
- South America
Umbrella cichlid
Apistogramma borellii
Temp20–26°CpH6–8Size3.9 cmDietCarnivoreSwimBottomDifficultyModerateUmbrella cichlid
Apistogramma borellii
- South America
Vampire Pleco
Leporacanthicus galaxias
Temp22–26°CpH5.6–7Size25 cmDietOmnivoreSwimBottomDifficultyModerateVampire Pleco
Leporacanthicus galaxias
- West Africa (Gabon, Cameroon, Nigeria)
Vampire Shrimp
Atya gabonensis
Temp24–28°CpH6.5–7.5Size15 cmDietOmnivoreSwimBottomDifficultyModerateVampire Shrimp
Atya gabonensis
- Asia
Walking snakehead
Channa orientalis
Temp16–24°CpH5–7.5Size10 cmDietCarnivoreSwimBottomDifficultyModerateWalking snakehead
Channa orientalis
- South America
Whiptail catfish
Farlowella acus
Temp24–28°CpH6–7Size16 cmDietHerbivoreSwimBottomDifficultyModerateWhiptail catfish
Farlowella acus
- South America
Whiptail Catfish
Loricaria simillima
Temp22–28°CpH6–7.5Size26.4 cmDietOmnivoreSwimBottomDifficultyModerateWhiptail Catfish
Loricaria simillima
- Asia
White cloud mountain minnow
Tanichthys albonubes
Temp14–22°CpH6–8Size4 cmDietOmnivoreSwimMiddleDifficultyEasyWhite cloud mountain minnow
Tanichthys albonubes
- Asia
White Seam Betta
Betta albimarginata
Temp23–28°CpH4–6.5Size2.8 cmDietInsectivoreSwimMiddleDifficultyModerateWhite Seam Betta
Betta albimarginata
- Taiwan (selectively bred)
Yellow Shrimp
Neocaridina davidi var. yellow
Temp18–28°CpH6.5–8Size3 cmDietOmnivoreSwimMiddleDifficultyEasyYellow Shrimp
Neocaridina davidi var. yellow
- Asia
Zebra danio
Danio rerio
Temp—pH6–8Size3.8 cmDietOmnivoreSwimAll levelsDifficultyEasyZebra danio
Danio rerio
- Asia
Zebra loach
Botia striata
Temp21–26°CpH6–7.5Size9 cmDietCarnivoreSwimBottomDifficultyModerateZebra loach
Botia striata
- South America
Zebra Oto
Otocinclus cocama
Temp21–25°CpH6–7.5Size4.5 cmDietHerbivoreSwimBottomDifficultyModerateZebra Oto
Otocinclus cocama
- South America
Zebra pleco
Hypancistrus zebra
Temp26–30°CpH6–7.5Size8 cmDietCarnivoreSwimBottomDifficultyModerateZebra pleco
Hypancistrus zebra
- South and Southeast Asia (India, Thailand, Indonesia)
Zig-zag eel
Mastacembelus armatus
Temp24–28°CpH6–7Size90 cmDietCarnivoreSwimMiddleDifficultyModerateZig-zag eel
Mastacembelus armatus