Beginner – IntermediateAfrican Red Eyed Tetra
Arnoldichthys spilopterus
- Adult size
- up to 8 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–27 °C
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Beginner – Intermediate
Beginner – IntermediateAfrican Spottail Tetra
Brachypetersius altus
- Adult size
- up to 6 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–26 °C
Beginner – IntermediateAgassiz’s Apistogramma
Apistogramma agassizii
- Adult size
- up to 7.5 cm
- Aquarium size
- 120 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 22–29 °C
IntermediateAgassizs Corydoras
Corydoras agassizii
- Adult size
- up to 5 cm
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 21–26 °C
Beginner – IntermediateAjamaru Rainbowfish
Melanotaenia ajamaruensis
- Adult size
- up to 10 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 27–30 °C
IntermediateAllpahuayo Dwarf Cichlid
Apistogramma allpahuayo
- Adult size
- up to 7 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 24–28 °C
IntermediateAltifron Eartheater
Geophagus altifrons
- Adult size
- up to 22 cm
- Aquarium size
- 300 L or larger
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 26–32 °C
Beginner – IntermediateAmanda Jane Corydoras
Corydoras amandajanea
- Adult size
- up to 6 cm
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–26 °C
IntermediateAmazon Dwarf Cichlid
Apistogramma pertensis
- Adult size
- up to 7 cm
- Aquarium size
- 120 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 22–29 °C
Intermediate – AdvancedAmazon Leaffish
Monocirrhus polyacanthus
- Adult size
- up to 10 cm
- Aquarium size
- 200 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 22–25 °C
Beginner – IntermediateAmerican Flagfish
Jordanella floridae
- Adult size
- up to 7 cm
- Aquarium size
- 120 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 17–30 °C
Beginner – IntermediateAnnie’s Goby
Stiphodon annieae
- Adult size
- up to 3 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 18–24 °C
IntermediateAnus Spot Lampeye Killifish
Poropanchax stigmatopygus
- Adult size
- up to 2.5 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–26 °C
Intermediate – AdvancedApollo’s Leporinus
Leporinus apollo
- Adult size
- up to 15 cm
- Aquarium size
- 160 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 20–27 °C
IntermediateApricot Tetra
Dectobrycon armeniacus
- Adult size
- up to 6 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 24–28 °C
Beginner – IntermediateAraguaia Corydoras
Corydoras araguaiaensis
- Adult size
- up to 6 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 21–26 °C
Beginner – IntermediateArcher Halfbeak
Nomorhamphus sagittarius
- Adult size
- up to 7 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 24–28 °C
IntermediateArgentine Humphead
Gymnogeophagus balzanii
- Adult size
- up to 12 cm
- Aquarium size
- 200 L or larger
- Temperament
- Semi-Aggressive
- Temp
- 16–26 °C
Beginner – IntermediateArmatus Corydoras
Corydoras armatus
- Adult size
- up to 6.5 cm
- Aquarium size
- 100 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–26 °C
Beginner – IntermediateArmoured Stickleback
Indostomus paradoxus
- Adult size
- up to 3 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 22–27 °C
Beginner – IntermediateArowana Tetra
Gnathocharax steindachneri
- Adult size
- up to 5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–26 °C
Beginner – IntermediateAru Rainbowfish
Melanotaenia picta
- Adult size
- up to 9 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–27 °C
IntermediateArulius Barb
Dawkinsia tambraparniei
- Adult size
- up to 10 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 18–22 °C
Beginner – IntermediateAsian Bumblebee Catfish
Pseudomystus siamensis
- Adult size
- up to 15 cm
- Aquarium size
- 160 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 20–26 °C
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