Firemouth Cichlid
Thorichthys meeki
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 32 US gal (120 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 73–86°F (23–30°C)
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Flabellicauda Apistogramma
Apistogramma flabellicauda
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 72–82°F (22–28°C)
Flag Cichlid
Mesonauta festivus
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 99 US gal (375 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Temp
- 72–81°F (22–27°C)
Flag Tailed Panda Corydoras
Hoplisoma oiapoquensis
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 13 US gal (50 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 68–77°F (20–25°C)
Flag Tetra
Hyphessobrycon heterorhabdus
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–82°F (23–28°C)
Flagtail Catfish
Dianema urostriatum
- Adult size
- ≤ 5.1" (≤ 13 cm)
- Aquarium size
- 36 US gal (137 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–81°F (22–27°C)
Flagtail Corydoras
Brochis robineae
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 19 US gal (71 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 70–79°F (21–26°C)
Flame Tetra
Hyphessobrycon flammeus
- Adult size
- ≤ 1.2" (≤ 3 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–81°F (22–27°C)
Flameback Bleeding Heart Tetra
Hyphessobrycon pyrrhonotus
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–81°F (20–27°C)
Flash Plecostomus
Panaqolus albivermis
- Adult size
- ≤ 4.7" (≤ 12 cm)
- Aquarium size
- 32 US gal (120 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 75–86°F (24–30°C)
Foersch’s Betta
Betta foerschi
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–82°F (22–28°C)
Forest Snakehead
Channa lucius
- Adult size
- ≤ 17.7" (≤ 45 cm)
- Aquarium size
- 132 US gal (500 L) or larger / ≥ 59.1" (≥ 150 cm) minimum length
- Temperament
- Aggressive
- Zone
- Middle to top swimmer
- Temp
- 75–82°F (24–28°C)
Forktail Blue Eye Rainbowfish
Pseudomugil furcatus
- Adult size
- ≤ 2.2" (≤ 5.5 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 73–79°F (23–26°C)
Four-banded Tigerfish
Datnioides polota
- Adult size
- ≤ 11.8" (≤ 30 cm)
- Aquarium size
- 151 US gal (570 L) or larger / ≥ 59.1" (≥ 150 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 68–82°F (20–28°C)
Frail Gourami
Ctenops nobilis
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Aggressive
- Zone
- Middle to top swimmer
- Temp
- 59–77°F (15–25°C)
Frankei Tetra
Hyphessobrycon frankei
- Adult size
- ≤ 1.8" (≤ 4.5 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–81°F (22–27°C)
Frontosa Cichlid
Cyphotilapia frontosa
- Adult size
- ≤ 13.8" (≤ 35 cm)
- Aquarium size
- 132 US gal (500 L) or larger / ≥ 78.7" (≥ 200 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 73–81°F (23–27°C)
Fulleri Corydoras
Corydoras fulleri
- Adult size
- ≤ 3" (≤ 7.5 cm)
- Aquarium size
- 13 US gal (50 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Gabon Jewelfish
Aphyosemion cyanostictum
- Adult size
- ≤ 2" (≤ 5 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 77–95°F (25–35°C)
Gabon Killifish
Aphyosemion gabunense
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 8 US gal (30 L) or larger / ≥ 9.8" (≥ 25 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)
Galaxy Loach
Mesonoemacheilus guentheri
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 14 US gal (53 L) or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 64–77°F (18–25°C)
Galaxy Plecostomus L029
Leporacanthicus galaxias
- Adult size
- ≤ 9.8" (≤ 25 cm)
- Aquarium size
- 106 US gal (400 L) or larger / ≥ 59.1" (≥ 150 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Garnet Minnow
Aphyocypris lini
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 11 US gal (40 L) or larger / ≥ 19.7" (≥ 50 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 64–72°F (18–22°C)
Gary Lange’s Rainbowfish
Melanotaenia garylangei
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 30 US gal (114 L) or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 77–82°F (25–28°C)
