African Red Eyed Tetra
Arnoldichthys spilopterus
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 29 US gal (108 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–81°F (22–27°C)
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
African Spottail Tetra
Brachypetersius altus
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 30 US gal (112 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)
Agassiz’s Apistogramma
Apistogramma agassizii
- Adult size
- ≤ 3" (≤ 7.5 cm)
- Aquarium size
- 30 US gal (112 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 72–84°F (22–29°C)
Agassizs Corydoras
Brochis agassizii
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 70–79°F (21–26°C)
Ajamaru Rainbowfish
Melanotaenia ajamaruensis
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 55 US gal (208 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 81–86°F (27–30°C)
Allpahuayo Dwarf Cichlid
Apistogramma allpahuayo
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 21 US gal (80 L) or larger / ≥ 19.7" (≥ 50 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 75–82°F (24–28°C)
Altifron Eartheater
Geophagus altifrons
- Adult size
- ≤ 8.7" (≤ 22 cm)
- Aquarium size
- 171 US gal (648 L) or larger / ≥ 70.9" (≥ 180 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 79–90°F (26–32°C)
Amanda Jane Corydoras
Corydoras amandajanea
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 20 US gal (76 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Amazon Dwarf Cichlid
Apistogramma pertensis
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 72–84°F (22–29°C)
Amazon Leaffish
Monocirrhus polyacanthus
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 20 US gal (75 L) or larger / ≥ 29.5" (≥ 75 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 72–77°F (22–25°C)
American Flagfish
Jordanella floridae
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 63–86°F (17–30°C)
Annie’s Goby
Stiphodon annieae
- Adult size
- ≤ 1.2" (≤ 3 cm)
- Aquarium size
- 14 US gal (54 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 64–75°F (18–24°C)
Anus Spot Lampeye Killifish
Poropanchax stigmatopygus
- Adult size
- ≤ 1" (≤ 2.5 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–79°F (22–26°C)
Apollo’s Leporinus
Leporinus apollo
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 68–81°F (20–27°C)
Apricot Tetra
Dectobrycon armeniacus
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 20 US gal (76 L) or larger
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 75–82°F (24–28°C)
Araguaia Corydoras
Corydoras araguaiaensis
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 70–79°F (21–26°C)
Archer Halfbeak
Nomorhamphus sagittarius
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 75–82°F (24–28°C)
Argentine Humphead
Gymnogeophagus balzanii
- Adult size
- ≤ 4.7" (≤ 12 cm)
- Aquarium size
- 79 US gal (300 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Semi-Aggressive
- Temp
- 61–79°F (16–26°C)
Armatus Corydoras
Corydoras armatus
- Adult size
- ≤ 2.6" (≤ 6.5 cm)
- Aquarium size
- 13 US gal (50 L) or larger / ≥ 25.6" (≥ 65 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Armoured Stickleback
Indostomus paradoxus
- Adult size
- ≤ 1.2" (≤ 3 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 15.7" (≥ 40 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom to middle swimmer
- Temp
- 72–81°F (22–27°C)
Arowana Tetra
Gnathocharax steindachneri
- Adult size
- ≤ 2" (≤ 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
- 72–79°F (22–26°C)
Aru Rainbowfish
Melanotaenia picta
- Adult size
- ≤ 3.5" (≤ 9 cm)
- Aquarium size
- 20 US gal (75 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 72–81°F (22–27°C)
Arulius Barb
Dawkinsia tambraparniei
- Adult size
- ≤ 3.9" (≤ 10 cm)
- Aquarium size
- 64 US gal (243 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 64–72°F (18–22°C)
Asian Bumblebee Catfish
Pseudomystus siamensis
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 40 US gal (151 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 68–79°F (20–26°C)
