Asia
Assamese snakehead
Channa stewartii
Temp18–25°C
pH6.5–7.5
Size29.7 cm
DietCarnivore
SwimMiddle
DifficultyModerate
Assamese snakehead
Channa stewartii
fish
Middle-swimming aquarium fish
Species labeled for the middle water column — good anchors for community layouts between surface and substrate.
145 species
- Asia
Badis
Badis badis
Temp20–26°CpH6–8Size7.1 cmDietOmnivoreSwimMiddleDifficultyModerateBadis
Badis badis
- Central America
Biajaca
Nandopsis tetracanthus
Temp24–30°CpH7–8Size20 cmDietOmnivoreSwimMiddleDifficultyModerateBiajaca
Nandopsis tetracanthus
- South America (Brazil, Colombia, Guyana)
Black Arowana
Osteoglossum ferreirae
Temp24–30°CpH5–6.5Size80 cmDietCarnivoreSwimMiddleDifficultyExpertBlack Arowana
Osteoglossum ferreirae
- 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 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 streak hap
Labidochromis caeruleus
Temp24–28°CpH7.7–8.6Size10 cmDietOmnivoreSwimMiddleDifficultyModerateBlue streak hap
Labidochromis caeruleus
- Taiwan (selectively bred)
Blue Velvet Shrimp
Neocaridina davidi var. blue
Temp18–28°CpH6.5–8Size3 cmDietOmnivoreSwimMiddleDifficultyModerateBlue Velvet Shrimp
Neocaridina davidi var. blue
- Asia
Bluefinned snakehead
Channa bleheri
Temp18–25°CpH6–7.5Size14.4 cmDietCarnivoreSwimMiddleDifficultyModerateBluefinned snakehead
Channa bleheri
- Asia
Boeseman's rainbowfish
Melanotaenia boesemani
Temp27–30°CpH7–8Size11 cmDietOmnivoreSwimMiddleDifficultyModerateBoeseman's rainbowfish
Melanotaenia boesemani
- 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
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
- South America
Cardinal tetra
Paracheirodon axelrodi
Temp23.9–28.9°CpH4–6Size3 cmDietPlanktivoreSwimMiddleDifficultyEasyCardinal tetra
Paracheirodon axelrodi
- Asia
Checkered barb
Oliotius oligolepis
Temp18–25°CpH5.5–7.5Size4.5 cmDietOmnivoreSwimMiddleDifficultyEasyCheckered barb
Oliotius oligolepis
- Asia
Cherry barb
Puntius titteya
Temp20–27°CpH6–8Size5 cmDietOmnivoreSwimMiddleDifficultyModerateCherry barb
Puntius titteya
- 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
Chinese Bitterling
Rhodeus sinensis
Temp5–26°CpH7–8.5Size10.8 cmDietOmnivoreSwimMiddleDifficultyModerateChinese Bitterling
Rhodeus sinensis
- Asia
Chocolate gourami
Sphaerichthys osphromenoides
Temp26–31°CpH4–6.5Size5 cmDietCarnivoreSwimMiddleDifficultyModerateChocolate gourami
Sphaerichthys osphromenoides
- Asia
Clown rasbora
Rasbora kalochroma
Temp23–28°CpH5–7.5Size10 cmDietOmnivoreSwimMiddleDifficultyModerateClown rasbora
Rasbora kalochroma
- Asia
Cobalt Blue Goby
Stiphodon semoni
Temp22–28°CpH7–8Size4.6 cmDietOmnivoreSwimMiddleDifficultyModerateCobalt Blue Goby
Stiphodon semoni
- South America
Colombian Tetra
Hyphessobrycon columbianus
Temp24–28°CpH6–7.5Size7 cmDietOmnivoreSwimMiddleDifficultyModerateColombian Tetra
Hyphessobrycon columbianus
- Africa
Congo tetra
Phenacogrammus interruptus
Temp23–28°CpH6–7.5Size8 cmDietOmnivoreSwimMiddleDifficultyModerateCongo tetra
Phenacogrammus interruptus
- Asia
Daisy's Rice Fish
Oryzias woworae
Temp23–27°CpH6–7.5Size2.8 cmDietOmnivoreSwimMiddleDifficultyModerateDaisy's Rice Fish
Oryzias woworae
- Asia
Denison barb
Sahyadria denisonii
Temp15–25°CpH6.8–7.8Size15 cmDietOmnivoreSwimMiddleDifficultyModerateDenison barb
Sahyadria denisonii
- Oceania
Desert goby
Chlamydogobius eremius
Temp20–28°CpH7–8.5Size6 cmDietOmnivoreSwimMiddleDifficultyModerateDesert goby
Chlamydogobius eremius
- 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
- Indonesia (Mamberamo River, Papua)
Dwarf rainbowfish
Melanotaenia praecox
Temp23–28°CpH6.8–7.5Size8 cmDietOmnivoreSwimMiddleDifficultyModerateDwarf rainbowfish
Melanotaenia praecox
- Asia
Dwarf rasbora
Boraras maculatus
Temp20–28°CpH5–6.5Size2.5 cmDietOmnivoreSwimMiddleDifficultyModerateDwarf rasbora
Boraras maculatus
- South America
Ember tetra
Hyphessobrycon amandae
Temp20–28°CpH5–7Size2 cmDietOmnivoreSwimMiddleDifficultyEasyEmber tetra
Hyphessobrycon amandae
- Asia
Emerald Dwarf Rasbora
Danio erythromicron
Temp20–24°CpH7–8Size2 cmDietOmnivoreSwimMiddleDifficultyEasyEmerald Dwarf Rasbora
Danio erythromicron
- South America
Endlers guppy
Poecilia wingei
Temp24–30°CpH7–8.5Size4.5 cmDietOmnivoreSwimMiddleDifficultyEasyEndlers guppy
Poecilia wingei
- Asia
Eyespot pufferfish
Tetraodon biocellatus
Temp22.2–26.1°CpH6.5–7.5Size8 cmDietOmnivoreSwimMiddleDifficultyModerateEyespot pufferfish
Tetraodon biocellatus
- Africa
Fasciatus Shell Dweller
Altolamprologus fasciatus
Temp24–27°CpH8–9Size15 cmDietCarnivoreSwimMiddleDifficultyModerateFasciatus Shell Dweller
Altolamprologus fasciatus
- Asia
Finescale tigerfish
Datnioides microlepis
Temp20–28°CpH5.5–7.5Size50 cmDietCarnivoreSwimMiddleDifficultyModerateFinescale tigerfish
Datnioides microlepis
- Asia
Fiveband barb
Desmopuntius pentazona
Temp21–26°CpH4–7Size5.5 cmDietOmnivoreSwimMiddleDifficultyEasyFiveband barb
Desmopuntius pentazona
- 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
- 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
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
- Africa
Gold Cap Caudopunctatus
Neolamprologus caudopunctatus
Temp24–27°CpH7.5–8.5Size6.5 cmDietPlanktivoreSwimMiddleDifficultyModerateGold Cap Caudopunctatus
Neolamprologus caudopunctatus
- South America
Gold severum
Heros efasciatus var.
Temp22–29°CpH5–6.5Size20 cmDietOmnivoreSwimMiddleDifficultyModerateGold severum
Heros efasciatus var.
- Africa
Gold Shell Dweller
Lamprologus ocellatus
Temp23–27°CpH7.5–9Size5.8 cmDietOmnivoreSwimMiddleDifficultyModerateGold Shell Dweller
Lamprologus ocellatus
- 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
Guayas cichlid
Cichlasoma festae
Temp25–29°CpH7–8Size25 cmDietOmnivoreSwimMiddleDifficultyModerateGuayas cichlid
Cichlasoma festae
- Central America
Haitian cichlid
Nandopsis haitiensis
Temp24–30°CpH7–8Size21.5 cmDietOmnivoreSwimMiddleDifficultyModerateHaitian cichlid
Nandopsis haitiensis
- 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
- 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
- Asia
Horsehead
Opsariichthys bidens
Temp5–24°CpH6.5–8Size26.1 cmDietOmnivoreSwimMiddleDifficultyModerateHorsehead
Opsariichthys bidens
- Africa
Hump-head
Cyrtocara moorii
Temp24–28°CpH7.2–8.8Size20 cmDietOmnivoreSwimMiddleDifficultyModerateHump-head
Cyrtocara moorii
- Africa
Humphead cichlid
Cyphotilapia frontosa
Temp24–26°CpH8–9Size33 cmDietOmnivoreSwimMiddleDifficultyModerateHumphead cichlid
Cyphotilapia frontosa
- Asia
Indonesian snakehead
Channa micropeltes
Temp24–30°CpH6–8Size130 cmDietCarnivoreSwimMiddleDifficultyHardIndonesian snakehead
Channa micropeltes
- Central America
Jack Dempsey
Rocio octofasciata
Temp20–30°CpH7–8Size25 cmDietOmnivoreSwimMiddleDifficultyModerateJack Dempsey
Rocio octofasciata
- Asia
Javanese ricefish
Oryzias javanicus
Temp24–29°CpH7–9Size3.5 cmDietOmnivoreSwimMiddleDifficultyModerateJavanese ricefish
Oryzias javanicus
- 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
- Africa
Leleupi Cichlid
Neolamprologus leleupi
Temp23–27°CpH7.5–9Size10 cmDietCarnivoreSwimMiddleDifficultyModerateLeleupi Cichlid
Neolamprologus leleupi
- South America
Lemon tetra
Hyphessobrycon pulchripinnis
Temp20–28°CpH5–7.5Size3.8 cmDietOmnivoreSwimMiddleDifficultyModerateLemon tetra
Hyphessobrycon pulchripinnis
- Africa
Livingstonii Cichlid
Nimbochromis livingstonii
Temp24–28°CpH7.6–8.8Size25 cmDietCarnivoreSwimMiddleDifficultyModerateLivingstonii Cichlid
Nimbochromis livingstonii
- Madagascar
Madagascar Rainbow
Bedotia madagascarensis
Temp—pH4.5–7.5Size10 cmDietOmnivoreSwimMiddleDifficultyModerateMadagascar Rainbow
Bedotia madagascarensis
- Africa
Malawi eyebiter
Dimidiochromis compressiceps
Temp24–28°CpH8–8Size23 cmDietCarnivoreSwimMiddleDifficultyModerateMalawi eyebiter
Dimidiochromis compressiceps
- 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
- Central America
Moga
Hypsophrys nicaraguensis
Temp23–28°CpH7–8Size25 cmDietOmnivoreSwimMiddleDifficultyModerateMoga
Hypsophrys nicaraguensis
- Lake Tanganyika
Multies
Neolamprologus multifasciatus
Temp24–27°CpH7.5–9Size4.5 cmDietOmnivoreSwimMiddleDifficultyModerateMulties
Neolamprologus multifasciatus
- 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
- Southeast Asia (Indonesia, Philippines)
Onion Snail
Vittina olivacea
Temp22–28°CpH7–8.5Size3 cmDietHerbivoreSwimMiddleDifficultyModerateOnion Snail
Vittina olivacea
- 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
- 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
- Southeast Asia (Thailand, Malaysia, Indonesia)
Pearl gourami
Trichopodus leerii
Temp23.9–30°CpH5.5–8Size12 cmDietOmnivoreSwimMiddleDifficultyModeratePearl gourami
Trichopodus leerii
- Lake Tanganyika
Princess of Burundi
Neolamprologus brichardi
Temp23–27°CpH8–9Size9 cmDietOmnivoreSwimMiddleDifficultyModeratePrincess of Burundi
Neolamprologus brichardi
- 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 var.
Temp26–30°CpH5–6Size4.2 cmDietOmnivoreSwimMiddleDifficultyModerateRam cichlid
Mikrogeophagus ramirezi var.
- 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
- Indonesia (Lake Sentani, Papua)
Red rainbowfish
Glossolepis incisus
Temp22.2–25°CpH7–8Size15 cmDietOmnivoreSwimMiddleDifficultyModerateRed rainbowfish
Glossolepis incisus
- Amazon basin, South America
Red Spotted Severum
Heros efasciatus var.
Temp24–29°CpH6–7.5Size20 cmDietOmnivoreSwimMiddleDifficultyModerateRed Spotted Severum
Heros efasciatus var.
- South America
Redhump eartheater
Geophagus steindachneri
Temp20–30°CpH6–7.5Size15 cmDietOmnivoreSwimMiddleDifficultyModerateRedhump eartheater
Geophagus steindachneri
- Asia
Reticulated Sae
Crossocheilus reticulatus
Temp16–24°CpH6–7.5Size17 cmDietHerbivoreSwimMiddleDifficultyModerateReticulated Sae
Crossocheilus reticulatus
- Asia
Rhinogobius
Rhinogobius zhoui
Temp15–24°CpH7–8Size3.6 cmDietOmnivoreSwimMiddleDifficultyModerateRhinogobius
Rhinogobius zhoui
- 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
- East Asia (China, Japan, Korea)
Rose bitterling
Rhodeus ocellatus
Temp5–25°CpH7–8.5Size8 cmDietOmnivoreSwimMiddleDifficultyModerateRose bitterling
Rhodeus ocellatus
- 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
- 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
- North America
Sailfin molly
Poecilia latipinna
Temp24–28°CpH7.5–8.5Size15 cmDietOmnivoreSwimMiddleDifficultyExpertSailfin molly
Poecilia latipinna
- 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
- Asia
Siamese algae-eater
Gyrinocheilus aymonieri
Temp22–28°CpH6–8Size28 cmDietHerbivoreSwimMiddleDifficultyModerateSiamese algae-eater
Gyrinocheilus aymonieri
- Asia
Siamese fighting fish
Betta splendens
Temp22–30°CpH6–8Size6.5 cmDietOmnivoreSwimMiddleDifficultyModerateSiamese fighting fish
Betta splendens
- Asia
Siamese fighting fish
Betta splendens var.
Temp24–30°CpH6–8Size6.5 cmDietCarnivoreSwimMiddleDifficultyModerateSiamese fighting fish
Betta splendens var.
- Asia
Siamese flying fox
Crossocheilus oblongus
Temp23–27°CpH6–7.5Size16 cmDietOmnivoreSwimMiddleDifficultyModerateSiamese flying fox
Crossocheilus oblongus
- Asia
Silver Tiger fish
Datnioides polota
Temp20–28°CpH7.5–9Size30 cmDietCarnivoreSwimMiddleDifficultyHardSilver Tiger fish
Datnioides polota
- 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
Snakehead Betta
Betta channoides
Temp23–30°CpH4–6.5Size4 cmDietCarnivoreSwimMiddleDifficultyModerateSnakehead Betta
Betta channoides
- Central America
Southern platyfish
Xiphophorus maculatus
Temp20–26°CpH7–8.2Size6 cmDietOmnivoreSwimMiddleDifficultyEasySouthern platyfish
Xiphophorus maculatus
- South America
Splash tetra
Copella arnoldi
Temp20–28°CpH4–7.5Size5.5 cmDietOmnivoreSwimMiddleDifficultyModerateSplash tetra
Copella arnoldi
- Asia
Spotted blue-eye
Pseudomugil gertrudae
Temp23–28°CpH6–6Size3.8 cmDietPlanktivoreSwimMiddleDifficultyModerateSpotted blue-eye
Pseudomugil gertrudae
- Asia
Strawberry Rasbora
Boraras naevus
Temp24–28°CpH5–6.5Size1.3 cmDietOmnivoreSwimMiddleDifficultyEasyStrawberry Rasbora
Boraras naevus
- Asia
Sumatra barb
Puntigrus tetrazona
Temp20–26°CpH5–8Size6 cmDietOmnivoreSwimMiddleDifficultyEasySumatra barb
Puntigrus tetrazona
- Africa
Tanganyika blackfin
Altolamprologus calvus
Temp24–27°CpH8–9Size13.5 cmDietOmnivoreSwimMiddleDifficultyModerateTanganyika blackfin
Altolamprologus calvus
- Africa
Temporaris Shell Dweller
Telmatochromis temporalis
Temp24–27°CpH8–9Size4.4 cmDietOmnivoreSwimMiddleDifficultyModerateTemporaris Shell Dweller
Telmatochromis temporalis
- 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
- Africa
Venustus Cichlid
Nimbochromis venustus
Temp24–28°CpH7.6–8.8Size25 cmDietCarnivoreSwimMiddleDifficultyModerateVenustus Cichlid
Nimbochromis venustus
- 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
- Central America
Yellow belly cichlid
Cichlasoma salvini
Temp22–28°CpH7–8Size22 cmDietOmnivoreSwimMiddleDifficultyModerateYellow belly cichlid
Cichlasoma salvini
- Taiwan (selectively bred)
Yellow Shrimp
Neocaridina davidi var. yellow
Temp18–28°CpH6.5–8Size3 cmDietOmnivoreSwimMiddleDifficultyEasyYellow Shrimp
Neocaridina davidi var. yellow
- South and Southeast Asia (India, Thailand, Indonesia)
Zig-zag eel
Mastacembelus armatus
Temp24–28°CpH6–7Size90 cmDietCarnivoreSwimMiddleDifficultyModerateZig-zag eel
Mastacembelus armatus