Southeast Asia (Indonesia, Thailand, Malaysia)
Assassin Snail
Anentome helena
Temp20–28°C
pH7.2–8.5
Size3 cm
DietCarnivore
SwimBottom
DifficultyEasy
Assassin Snail
Anentome helena
fish
Fish suited to alkaline water (around pH 8)
Species whose documented pH range includes 8.0 — overlap check only; measure your own water and acclimate carefully.
99 species
- Asia
Badis
Badis badis
Temp20–26°CpH6–8Size7.1 cmDietOmnivoreSwimMiddleDifficultyModerateBadis
Badis badis
- Central America
Biajaca
Nandopsis tetracanthus
Temp24–30°CpH7–8Size20 cmDietCarnivoreSwimMiddleDifficultyModerateBiajaca
Nandopsis tetracanthus
- South America
Black ghost
Apteronotus albifrons
Temp23–28°CpH6–8Size50 cmDietCarnivoreSwimBottomDifficultyModerateBlack ghost
Apteronotus albifrons
- 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
- South America
Blue acara
Andinoacara pulcher var.
Temp22–28°CpH6.5–8Size16 cmDietOmnivoreSwimMiddleDifficultyModerateBlue acara
Andinoacara pulcher var.
- 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
- Africa
Bluegray mbuna
Melanochromis johannii
Temp24–28°CpH7.5–8.6Size10 cmDietHerbivoreSwimBottomDifficultyModerateBluegray mbuna
Melanochromis johannii
- Asia
Boeseman's rainbowfish
Melanotaenia boesemani
Temp27–30°CpH7–8Size11 cmDietOmnivoreSwimMiddleDifficultyModerateBoeseman's rainbowfish
Melanotaenia boesemani
- 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°CpH7–8Size8 cmDietOmnivoreSwimMiddleDifficultyModerateButterfly splitfin
Ameca splendens
- Sulawesi, Indonesia
Cardinal Shrimp
Caridina dennerli
Temp26–30°CpH7.5–8.5Size2.5 cmDietOmnivoreSwimBottomDifficultyExpertCardinal Shrimp
Caridina dennerli
- Asia
Celebes rainbowfish
Marosatherina ladigesi
Temp22.2–27.8°CpH7–8Size8 cmDietOmnivoreSwimAll levelsDifficultyModerateCelebes rainbowfish
Marosatherina ladigesi
- 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
- Asia
Chinese algae-eater
Gyrinocheilus aymonieri
Temp22–26°CpH6–8Size28 cmDietOmnivoreSwimBottomDifficultyModerateChinese algae-eater
Gyrinocheilus aymonieri
- Asia
Chinese barb
Barbodes semifasciolatus
Temp16–24°CpH6–8Size7.5 cmDietOmnivoreSwimMiddleDifficultyEasyChinese barb
Barbodes semifasciolatus
- South America
Cockatoo cichlid
Apistogramma cacatuoides
Temp22–29°CpH6–8Size5 cmDietCarnivoreSwimBottomDifficultyEasyCockatoo cichlid
Apistogramma cacatuoides
- Central America
Convict cichlid
Amatitlania nigrofasciata
Temp24–28°CpH6–8Size10 cmDietOmnivoreSwimBottomDifficultyEasyConvict cichlid
Amatitlania nigrofasciata
- Oceania
Desert goby
Chlamydogobius eremius
Temp20–28°CpH7–8.5Size6 cmDietOmnivoreSwimMiddleDifficultyModerateDesert goby
Chlamydogobius eremius
- 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
- Africa
Fasciatus Shell Dweller
Altolamprologus fasciatus
Temp24–27°CpH8–9Size15 cmDietCarnivoreSwimMiddleDifficultyModerateFasciatus Shell Dweller
Altolamprologus fasciatus
- Central America
Firemouth cichlid
Thorichthys meeki
Temp20–32°CpH6.5–8.5Size12 cmDietOmnivoreSwimBottomDifficultyModerateFiremouth cichlid
Thorichthys meeki
- Oceania
Forktail rainbowfish
Pseudomugil furcatus
Temp—pH6–8Size5 cmDietOmnivoreSwimMiddleDifficultyModerateForktail rainbowfish
Pseudomugil furcatus
- 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
- Africa
Gold Cap Caudopunctatus
Neolamprologus caudopunctatus
Temp23–25°CpH7.5–8.5Size6.5 cmDietCarnivoreSwimBottomDifficultyEasyGold Cap Caudopunctatus
Neolamprologus caudopunctatus
- South America
Gold Nugget Pleco
Baryancistrus xanthellus
Temp27–32°CpH6–8Size22.41 cmDietOmnivoreSwimBottomDifficultyHardGold Nugget Pleco
Baryancistrus xanthellus
- Africa
Gold Shell Dweller
Lamprologus ocellatus
Temp23–27°CpH7.5–9Size5.8 cmDietOmnivoreSwimMiddleDifficultyModerateGold Shell Dweller
Lamprologus ocellatus
- Africa
Gray bichir
Polypterus senegalus
Temp—pH6–8Size70 cmDietCarnivoreSwimBottomDifficultyModerateGray bichir
Polypterus senegalus
- Central America
Green swordtail
Xiphophorus hellerii
Temp16–28°CpH7–8Size16 cmDietOmnivoreSwimAll levelsDifficultyEasyGreen swordtail
Xiphophorus hellerii
- South America
Green terror
Andinoacara rivulatus
Temp20–24°CpH6.5–8Size30 cmDietOmnivoreSwimMiddleDifficultyModerateGreen terror
Andinoacara rivulatus
- South America
Guayas cichlid
Cichlasoma festae
Temp25–29°CpH7–8Size25 cmDietOmnivoreSwimMiddleDifficultyModerateGuayas cichlid
Cichlasoma festae
- South America
Guppy
Poecilia reticulata
Temp17–28°CpH7–8Size5 cmDietOmnivoreSwimTopDifficultyEasyGuppy
Poecilia reticulata
- Central America
Haitian cichlid
Nandopsis haitiensis
Temp24–27°CpH7–8Size21.5 cmDietOmnivoreSwimBottomDifficultyHardHaitian cichlid
Nandopsis haitiensis
- South America
Hoplo Catfish
Megalechis thoracata
Temp18–28°CpH6–8Size15.5 cmDietOmnivoreSwimBottomDifficultyEasyHoplo Catfish
Megalechis thoracata
- Africa
Hump-head
Cyrtocara moorii
Temp25–29°CpH7.5–8.8Size25 cmDietCarnivoreSwimBottomDifficultyModerateHump-head
Cyrtocara moorii
- Africa
Humphead cichlid
Cyphotilapia frontosa
Temp23–27°CpH8–9Size25 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°CpH6.5–8Size20 cmDietOmnivoreSwimBottomDifficultyModerateJack Dempsey
Rocio octofasciata
- Asia
Japanese rice fish
Oryzias latipes
Temp16–22°CpH6.5–8.5Size3.6 cmDietOmnivoreSwimAll levelsDifficultyModerateJapanese rice fish
Oryzias latipes
- Asia
Javanese ricefish
Oryzias javanicus
Temp24–29°CpH7–9Size3.5 cmDietOmnivoreSwimMiddleDifficultyModerateJavanese ricefish
Oryzias javanicus
- Southeast Asia
Kissing gourami
Helostoma temminckii
Temp22–30°CpH6–8Size30 cmDietOmnivoreSwimMiddleDifficultyModerateKissing gourami
Helostoma temminckii
- Africa
Leleupi Cichlid
Neolamprologus leleupi
Temp23–27°CpH7.5–9Size10 cmDietCarnivoreSwimMiddleDifficultyModerateLeleupi Cichlid
Neolamprologus leleupi
- South America
Leopard corydoras
Corydoras julii
Temp20–26°CpH6–8Size5.5 cmDietOmnivoreSwimBottomDifficultyEasyLeopard corydoras
Corydoras julii
- Africa
Livingstonii Cichlid
Nimbochromis livingstonii
Temp24–28°CpH7.6–8.8Size25 cmDietCarnivoreSwimMiddleDifficultyModerateLivingstonii Cichlid
Nimbochromis livingstonii
- Asia
Malabar pufferfish
Carinotetraodon travancoricus
Temp22–28°CpH6.8–8Size2.5 cmDietCarnivoreSwimBottomDifficultyExpertMalabar pufferfish
Carinotetraodon travancoricus
- Africa
Malawi eyebiter
Dimidiochromis compressiceps
Temp24–28°CpH8–8Size23 cmDietCarnivoreSwimMiddleDifficultyModerateMalawi eyebiter
Dimidiochromis compressiceps
- Central America
Moga
Hypsophrys nicaraguensis
Temp23–28°CpH7–8Size25 cmDietOmnivoreSwimMiddleDifficultyModerateMoga
Hypsophrys nicaraguensis
- Central America
Molly
Poecilia sphenops
Temp24–28°CpH7.5–8.2Size7.5 cmDietOmnivoreSwimAll levelsDifficultyModerateMolly
Poecilia sphenops
- Asia
Mugilogobius
Mugilogobius hitam
Temp24–28°CpH7–8Size4.3 cmDietInsectivoreSwimBottomDifficultyExpertMugilogobius
Mugilogobius hitam
- Lake Tanganyika
Multies
Neolamprologus multifasciatus
Temp24–27°CpH7.5–9Size4.5 cmDietOmnivoreSwimMiddleDifficultyModerateMulties
Neolamprologus multifasciatus
- Southeast Asia (Indonesia, Philippines)
Onion Snail
Vittina olivacea
Temp22–28°CpH7–8.5Size3 cmDietHerbivoreSwimMiddleDifficultyModerateOnion Snail
Vittina olivacea
- Southeast Asia (Thailand, Malaysia, Indonesia)
Pearl gourami
Trichopodus leerii
Temp23.9–30°CpH5.5–8Size12 cmDietOmnivoreSwimMiddleDifficultyModeratePearl gourami
Trichopodus leerii
- Asia
Pond loach
Misgurnus anguillicaudatus
Temp18–23°CpH6.5–8Size28 cmDietOmnivoreSwimBottomDifficultyModeratePond loach
Misgurnus anguillicaudatus
- Lake Tanganyika
Princess of Burundi
Neolamprologus brichardi
Temp23–27°CpH8–9Size9 cmDietOmnivoreSwimMiddleDifficultyModeratePrincess of Burundi
Neolamprologus brichardi
- South America
Pygmy corydoras
Corydoras pygmaeus
Temp22–26°CpH6–8Size2.1 cmDietOmnivoreSwimBottomDifficultyEasyPygmy corydoras
Corydoras pygmaeus
- Indonesia (Lake Sentani, Papua)
Red rainbowfish
Glossolepis incisus
Temp22.2–25°CpH7–8Size15 cmDietOmnivoreSwimMiddleDifficultyModerateRed rainbowfish
Glossolepis incisus
- 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
- 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
- North America
Sailfin molly
Poecilia latipinna
Temp21–26°CpH7–8.5Size12.5 cmDietHerbivoreSwimMiddleDifficultyModerateSailfin 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 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
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
Small snakehead
Channa asiatica
Temp15–25°CpH6–8Size35 cmDietCarnivoreSwimBottomDifficultyExpertSmall snakehead
Channa asiatica
- Central America
Southern platyfish
Xiphophorus maculatus
Temp20–26°CpH7–8.2Size6 cmDietOmnivoreSwimMiddleDifficultyEasySouthern platyfish
Xiphophorus maculatus
- 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°CpH5–8Size15 cmDietInsectivoreSwimTopDifficultyEasyThree-lined rasbora
Rasbora trilineata
- South America
Umbrella cichlid
Apistogramma borellii
Temp20–26°CpH6–8Size3.9 cmDietCarnivoreSwimBottomDifficultyModerateUmbrella cichlid
Apistogramma borellii
- 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
- Central America
Yellow belly cichlid
Cichlasoma salvini
Temp22–26°CpH6.5–8Size15 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
- Asia
Zebra Archerfish
Toxotes blythii
Temp25–30°CpH7–8Size15 cmDietCarnivoreSwimTopDifficultyModerateZebra Archerfish
Toxotes blythii
- Asia
Zebra danio
Danio rerio
Temp—pH6–8Size3.8 cmDietOmnivoreSwimAll levelsDifficultyEasyZebra danio
Danio rerio
- East Africa (Kenya, Tanzania, Mozambique)
Zebra Nerite
Vittina natalensis
Temp22–28°CpH7–8.5Size3 cmDietHerbivoreSwimBottomDifficultyModerateZebra Nerite
Vittina natalensis