Beginner – IntermediateBlue Cheek Dwarf Cichlid
Apistogramma eunotus
- Adult size
- up to 5.5 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 23–29 °C
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Beginner – Intermediate
Beginner – IntermediateBlue Danio
Danio kerri
- Adult size
- up to 4.5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–25 °C
IntermediateBlue Diamond Tetra
Alestopetersius smykalai
- Adult size
- up to 6 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–27 °C
IntermediateBlue Dolphin Cichlid
Cyrtocara moorii
- Adult size
- up to 25 cm
- Aquarium size
- 300 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 23–28 °C
Beginner – IntermediateBlue Eyed Congo Tetra
Phenacogrammus aurantiacus
- Adult size
- up to 10 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–27 °C
Intermediate – AdvancedBlue Eyed Plecostomus
Panaque cochliodon
- Adult size
- up to 30 cm
- Aquarium size
- 300 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–28 °C
Beginner – IntermediateBlue Fin Hillstream Loach
Gastromyzon aeroides
- Adult size
- up to 5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 20–24 °C
Beginner – IntermediateBlue Flash Glass Tetra
Heterocharax vigulatus
- Adult size
- up to 4 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–28 °C
Beginner – IntermediateBlue Moon Danio
Devario xyrops
- Adult size
- up to 8 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 18–26 °C
IntermediateBlue Neon Cichlid
Paracyprichromis nigripinnis
- Adult size
- up to 11 cm
- Aquarium size
- 200 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 24–27 °C
Beginner – IntermediateBlue Neon Goby
Stiphodon atropurpureus
- Adult size
- up to 5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 20–27 °C
Beginner – IntermediateBlue Panchax
Aplocheilus panchax
- Adult size
- up to 8 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 20–26 °C
Beginner – IntermediateBlue Panda Apistogramma
Apistogramma panduro
- Adult size
- up to 7.5 cm
- Aquarium size
- 120 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 21–28 °C
BeginnerBlue Purple Emperor Tetra
Inpaichthys kerri
- Adult size
- up to 4 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–26 °C
IntermediateBlue Scraper Cichlid
Neochromis omnicaeruleus
- Adult size
- up to 12 cm
- Aquarium size
- 200 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 23–27 °C
IntermediateBlue Spot African Tetra
Brycinus poptae
- Adult size
- up to 16 cm
- Aquarium size
- 240 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 21–27 °C
Intermediate – AdvancedBlue Spotted Hill Trout
Barilius bakeri
- Adult size
- up to 15 cm
- Aquarium size
- 200 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 17–26 °C
Beginner – IntermediateBlue Striped Rivulus Killifish
Rivulus xiphidius
- Adult size
- up to 4.5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–25 °C
Beginner – IntermediateBlue Tetra
Tyttocharax cochui
- Adult size
- up to 2 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–26 °C
Beginner – IntermediateBlue-purple Croaking Tetra
Mimagoniates barberi
- Adult size
- up to 4 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 20–24 °C
Beginner – IntermediateBlueberry Tetra
Hyphessobrycon wadai
- Adult size
- up to 2.5 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 20–26 °C
Beginner – IntermediateBluefin Killifish
Lucania goodei
- Adult size
- up to 5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 12–22 °C
Beginner – IntermediateBluefin Notho
Nothobranchius rachovii
- Adult size
- up to 6 cm
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 20–23 °C
BeginnerBoesemans Rainbowfish
Melanotaenia boesemani
- Adult size
- up to 13 cm
- Aquarium size
- 160 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 26–30 °C
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