IntermediateFeatherfin Pearlfish
Simpsonichthys constanciae
- Adult size
- up to 6 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–25 °C
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Intermediate
Beginner – IntermediateFeatherfin Tetra
Hemigrammus unilineatus
- Adult size
- up to 5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–28 °C
Beginner – IntermediateFieryblack Shiner
Cyprinella pyrrhomelas
- Adult size
- up to 11 cm
- Aquarium size
- 120 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 18–24 °C
Intermediate – AdvancedFigure Eight Pufferfish
Tetraodon biocellatus
- Adult size
- up to 8 cm
- Aquarium size
- 120 L or larger
- Temperament
- Semi-Aggressive
- Temp
- 22–26 °C
Beginner – IntermediateFilament Tetra
Bryconaethiops microstoma
- Adult size
- up to 15 cm
- Aquarium size
- 160 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 24–28 °C
Beginner – IntermediateFire Ant Tetra
Hyphessobrycon myrmex
- Adult size
- up to 2 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–27 °C
Beginner – IntermediateFire Bar Danio
Devario maetaengensis
- Adult size
- up to 5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 20–26 °C
Intermediate – AdvancedFire Eel
Mastacembelus erythrotaenia
- Adult size
- up to 100 cm
- Aquarium size
- 900 L or larger
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 24–28 °C
BeginnerFire Green Tetra
Aphyocharax rathbuni
- Adult size
- up to 4.5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 20–26 °C
Beginner – IntermediateFire Rasbora
Rasboroides vaterifloris
- Adult size
- up to 4 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 24–28 °C
IntermediateFire Red Licorice Gourami
Parosphromenus sumatranus
- Adult size
- up to 3 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 25–28 °C
IntermediateFirefly Betta
Betta dimidiata
- Adult size
- up to 5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–28 °C
IntermediateFirehead Tetra
Hemigrammus bleheri
- Adult size
- up to 5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 24–28 °C
Beginner – IntermediateFireline Danio
Devario sondhii
- Adult size
- up to 6 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 20–26 °C
Beginner – IntermediateFiremouth Cichlid
Thorichthys meeki
- Adult size
- up to 15 cm
- Aquarium size
- 200 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 23–30 °C
IntermediateFlabellicauda Apistogramma
Apistogramma flabellicauda
- Adult size
- up to 7 cm
- Aquarium size
- 120 L or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 22–28 °C
Beginner – IntermediateFlag Cichlid
Mesonauta festivus
- Adult size
- up to 15 cm
- Aquarium size
- 200 L or larger
- Temperament
- Peaceful
- Temp
- 22–27 °C
Beginner – IntermediateFlag Tailed Panda Corydoras
Corydoras oiapoquensis
- Adult size
- up to 5 cm
- Aquarium size
- 60 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 20–25 °C
IntermediateFlag Tetra
Hyphessobrycon heterorhabdus
- Adult size
- up to 3.5 cm
- Aquarium size
- 45 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 23–28 °C
Beginner – IntermediateFlagtail Catfish
Dianema urostriatum
- Adult size
- up to 13 cm
- Aquarium size
- 160 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 22–27 °C
Beginner – IntermediateFlagtail Corydoras
Corydoras robineae
- Adult size
- up to 7 cm
- Aquarium size
- 100 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 21–26 °C
BeginnerFlame Tetra
Hyphessobrycon flammeus
- Adult size
- up to 3 cm
- Aquarium size
- 30 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 22–27 °C
Beginner – IntermediateFlameback Bleeding Heart Tetra
Hyphessobrycon pyrrhonotus
- Adult size
- up to 6 cm
- Aquarium size
- 80 L or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 20–27 °C
IntermediateFlash Plecostomus
Panaqolus albivermis
- Adult size
- up to 12 cm
- Aquarium size
- 100 L or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 24–30 °C
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