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Aquarium calculators
233 fish matched · 233 total
South America
Adolf's catfish

Adolf's catfish

Corydoras adolfoi

Temp22–26°C
pH6–7
Size6 cm
DietOmnivore
SwimBottom
DifficultyModerate
Adult tank80 L
Recommended group6

Keep a group on clean fine sand or smooth, rounded gravel.

Adolf's catfish

Corydoras adolfoi

Lifespan estimate
5 yr
Schooling
Yes
Aggression
1

Keep a group on clean fine sand or smooth, rounded gravel.

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South America
Agassiz's dwarf cichlid

Agassiz's dwarf cichlid

Apistogramma agassizii

Temp22–29°C
pH5–7
Size7.5 cm
DietCarnivore
SwimBottom
DifficultyModerate
Adult tank60 L
Recommended group1

Agassiz's dwarf cichlid

Apistogramma agassizii

Lifespan estimate
5 yr
Schooling
Solo OK
Aggression
2
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Asia
Alien betta

Alien betta

Betta splendens hybrid

Temp24–30°C
pH6–7.5
Size6.5 cm
DietCarnivore
SwimAll levels
DifficultyEasy
Adult tank20 L
Recommended group1

Keep males separate, with steady heat, gentle flow, surface access and a cover.

Alien betta

Betta splendens hybrid

Schooling
Solo OK
Aggression
4

High aggression — research tankmates carefully

Keep males separate, with steady heat, gentle flow, surface access and a cover.

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Asia
Almorha loach

Almorha loach

Botia almorhae

Temp19–27.5°C
pH6–7.5
Size16 cm
DietOmnivore
SwimBottom
DifficultyModerate
Adult tank243 L
Recommended group6

Almorha loach

Botia almorhae

Lifespan estimate
6 yr
Schooling
Yes
Aggression
3

Fin nipper — avoid with long-finned tankmates

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Japan, Taiwan, Korea
Amano Shrimp

Amano Shrimp

Caridina multidentata

Temp18–28°C
pH6.5–7.5
Size5 cm
DietHerbivore
SwimAll levels
DifficultyEasy
Adult tank40 L
Recommended group3

Amano Shrimp

Caridina multidentata

Schooling
Pairs
Aggression
1
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South America
Arawana

Arawana

Osteoglossum bicirrhosum

Temp20–30°C
pH5–7.5
Size80 cm
DietCarnivore
SwimTop
DifficultyExpert
Adult tank1000 L
Recommended group1

Arawana

Osteoglossum bicirrhosum

Lifespan estimate
15 yr
Schooling
Solo OK
Aggression
3
Compare
Southeast Asia
Asian bumblebee catfish

Asian bumblebee catfish

Pseudomystus siamensis

Temp22–26°C
pH6–7.5
Size18 cm
DietCarnivore
SwimBottom
DifficultyModerate
Adult tank120 L
Recommended group1

Asian bumblebee catfish

Pseudomystus siamensis

Schooling
Solo OK
Aggression
2
Compare
Asia
Asian Stone Catfish

Asian Stone Catfish

Hara jerdoni

Temp18–24°C
pH5.6–7.6
Size3 cm
DietOmnivore
SwimBottom
DifficultyModerate
Adult tank12.5 L
Recommended group3

Asian Stone Catfish

Hara jerdoni

Schooling
Pairs
Aggression
1
Compare
Asia
Assamese snakehead

Assamese snakehead

Channa stewartii

Temp18–25°C
pH6.5–7.5
Size29.7 cm
DietCarnivore
SwimMiddle
DifficultyModerate
Adult tank200 L
Recommended group1

Assamese snakehead

Channa stewartii

Lifespan estimate
10 yr
Schooling
Solo OK
Aggression
3
Compare
Southeast Asia (Indonesia, Thailand, Malaysia)
Assassin Snail

Assassin Snail

Anentome helena

Temp21–27°C
pH7.2–8
Size3 cm
DietCarnivore
SwimBottom
DifficultyEasy
Adult tank20 L
Recommended group1

Assassin Snail

Anentome helena

Schooling
Solo OK
Aggression
2
Compare
Southeast Asia (Indonesia, Malaysia, Thailand)
Bamboo Shrimp

Bamboo Shrimp

Atyopsis moluccensis

Temp22–28°C
pH6.5–7.5
Size10 cm
DietDetritivore
SwimBottom
DifficultyModerate
Adult tank80 L
Recommended group3

Bamboo Shrimp

Atyopsis moluccensis

Lifespan estimate
3 yr
Schooling
Pairs
Aggression
1
Compare
West Africa
Banded panchax

Banded panchax

Epiplatys annulatus

Temp23–26°C
pH5.5–7
Size3.5 cm
DietInsectivore
SwimTop
DifficultyModerate
Adult tank30 L
Recommended group4

Banded panchax

Epiplatys annulatus

Lifespan estimate
3 yr
Schooling
Yes
Aggression
1
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Central America
Biajaca

Biajaca

Nandopsis tetracanthus

Temp24–30°C
pH7–8
Size20 cm
DietCarnivore
SwimMiddle
DifficultyModerate
Adult tank300 L
Recommended group2

Biajaca

Nandopsis tetracanthus

Schooling
Pairs
Aggression
3
Compare
Rio Tocantins basin, Brazil
Bigtooth river stingray

Bigtooth river stingray

Potamotrygon henlei

Temp23–28°C
pH6–7.5
Size60 cm
DietCarnivore
SwimBottom
DifficultyExpert
Adult tank1728 L
Recommended group1

Bigtooth river stingray

Potamotrygon henlei

Lifespan estimate
20 yr
Schooling
Solo OK
Aggression
2
Compare
Rio Negro basin, tropical South America
Black Arowana

Black Arowana

Osteoglossum ferreirai

Temp24–30°C
pH—
Size90 cm
DietCarnivore
SwimMiddle
DifficultyExpert
Adult tank—
Recommended group1

Black Arowana

Osteoglossum ferreirai

Lifespan estimate
20 yr
Schooling
Solo OK
Aggression
2
Compare
South America
Black ghost knifefish

Black ghost knifefish

Apteronotus albifrons

Temp23–28°C
pH6–8
Size50 cm
DietCarnivore
SwimBottom
DifficultyModerate
Adult tank450 L
Recommended group1

Provide effective filtration, sheltered retreats and at least 450 L for one adult; allow more room for additional fish.

Black ghost knifefish

Apteronotus albifrons

Lifespan estimate
10 yr
Schooling
Solo OK
Aggression
1

Provide effective filtration, sheltered retreats and at least 450 L for one adult; allow more room for additional fish.

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South America
Black neon tetra

Black neon tetra

Hyphessobrycon herbertaxelrodi

Temp20–28°C
pH5–7.5
Size3.5 cm
DietOmnivore
SwimMiddle
DifficultyEasy
Adult tank72 L
Recommended group8

Black neon tetra

Hyphessobrycon herbertaxelrodi

Lifespan estimate
5 yr
Schooling
Strong
Aggression
1
Compare
Upper Rio Madeira basin (Bolivia/Brazil), Pantanal
Black phantom tetra

Black phantom tetra

Hyphessobrycon megalopterus

Temp20–28°C
pH5–7
Size3.6 cm
DietOmnivore
SwimMiddle
DifficultyEasy
Adult tank72 L
Recommended group8

Black phantom tetra

Hyphessobrycon megalopterus

Lifespan estimate
5 yr
Schooling
Strong
Aggression
1
Compare
Asia
Black ruby barb

Black ruby barb

Pethia nigrofasciata

Temp20–27°C
pH5.5–7.5
Size5.5 cm
DietOmnivore
SwimMiddle
DifficultyEasy
Adult tank80 L
Recommended group6

Black ruby barb

Pethia nigrofasciata

Lifespan estimate
5 yr
Schooling
Yes
Aggression
1
Compare
South America
Black widow tetra

Black widow tetra

Gymnocorymbus ternetzi

Temp20–26°C
pH6–7
Size6 cm
DietOmnivore
SwimMiddle
DifficultyEasy
Adult tank70 L
Recommended group6

Black widow tetra

Gymnocorymbus ternetzi

Lifespan estimate
5 yr
Schooling
Yes
Aggression
1

Fin nipper — avoid with long-finned tankmates

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South America
Blackline penguinfish

Blackline penguinfish

Thayeria boehlkei

Temp22–28°C
pH5.5–8
Size3.6 cm
DietOmnivore
SwimMiddle
DifficultyModerate
Adult tank68 L
Recommended group6

Blackline penguinfish

Thayeria boehlkei

Lifespan estimate
5 yr
Schooling
Yes
Aggression
2
Compare
Asia
Blackline rasbora

Blackline rasbora

Rasbora borapetensis

Temp22–26°C
pH6–7.5
Size5 cm
DietOmnivore
SwimMiddle
DifficultyModerate
Adult tank70 L
Recommended group8

Blackline rasbora

Rasbora borapetensis

Schooling
Strong
Aggression
1
Compare
Upper Amazon basin (Brazil/Peru/Colombia)
Bleeding-heart tetra

Bleeding-heart tetra

Hyphessobrycon erythrostigma

Temp21–28°C
pH4–7.5
Size6 cm
DietOmnivore
SwimMiddle
DifficultyModerate
Adult tank81 L
Recommended group8

Bleeding-heart tetra

Hyphessobrycon erythrostigma

Lifespan estimate
5 yr
Schooling
Strong
Aggression
1
Compare
South America
Blue acara

Blue acara

Andinoacara pulcher

Temp22–28°C
pH6.5–8
Size15 cm
DietCarnivore
SwimMiddle
DifficultyModerate
Adult tank150 L
Recommended group1

Provide a base of at least 120 × 30 cm for a pair and feed varied, predominantly carnivorous foods.

Blue acara

Andinoacara pulcher

Lifespan estimate
10 yr
Schooling
Solo OK
Aggression
3

Provide a base of at least 120 × 30 cm for a pair and feed varied, predominantly carnivorous foods.

Compare