Brittans Rasbora
Kottelatia brittani
- Adult size
- 1.2–2.4" (3–6 cm)
- Aquarium size
- ≥ 29.5" (≥ 75 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–79°F (20–26°C)
Aquarium Fish Database
Explore freshwater aquarium fish by care level, size, temperament, swimming zone, water parameters, and compatibility.
Broadstripe Shiner
Pteronotropis euryzonus
- Adult size
- ≤ 2.8" (≤ 7 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 54–63°F (12–17°C)
Broken Line Tetra
Hemigrammus ulreyi
- Adult size
- ≤ 2" (≤ 5 cm)
- Aquarium size
- 30 US gal (112 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–81°F (23–27°C)
Bronze Corydoras Var Longfin
Corydoras aeneus
- Adult size
- ≤ 3" (≤ 7.5 cm)
- Aquarium size
- 16 US gal (60 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 70–81°F (21–27°C)
Brown Fork Tail Loach
Vaillantella cinnamomea
- Adult size
- ≤ 2" (≤ 5 cm)
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Brown Ghost Knifefish
Apteronotus leptorhynchus
- Adult size
- ≤ 10.6" (≤ 26.9 cm)
- Aquarium size
- 119 US gal (450 L) or larger
- Temperament
- Semi-Aggressive
- Zone
- Bottom dweller
- Temp
- 75–82°F (24–28°C)
Bucktooth Tetra
Exodon paradoxus
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 59.1" (≥ 150 cm) minimum length
- Temperament
- Aggressive
- Zone
- Middle to top swimmer
- Temp
- 73–82°F (23–28°C)
Buenos Aires Tetra
Hyphessobrycon anisitsi
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 21 US gal (81 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 61–82°F (16–28°C)
Bumblebee Goby
Brachygobius doriae
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Aquarium size
- 5 US gal (20 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Bottom to middle swimmer
- Temp
- 72–82°F (22–28°C)
Bumblebee Otocinclus
Rhinotocinclus isabelae
- Adult size
- ≤ 0.7" (≤ 1.9 cm)
- Aquarium size
- 20 US gal (76 L) or larger
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–79°F (22–26°C)
Burgess Corydoras
Hoplisoma burgessi
- Adult size
- ≤ 2.2" (≤ 5.5 cm)
- Aquarium size
- 30 US gal (112 L) or larger / ≥ 31.5" (≥ 80 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 68–82°F (20–28°C)
Burmese Spotted Snakehead
Channa ornatipinnis
- Adult size
- ≤ 9.8" (≤ 25 cm)
- Aquarium size
- 106 US gal (400 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Aggressive
- Zone
- Bottom to middle swimmer
Butterfly Barb
Barbus hulstaerti
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Aquarium size
- 26 US gal (100 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 63–75°F (17–24°C)
Butterfly Peacock Bass
Cichla ocellaris
- Adult size
- ≤ 29.5" (≤ 75 cm)
- Aquarium size
- 220 US gal (832 L) or larger / ≥ 96.1" (≥ 244 cm) minimum length
- Temperament
- Aggressive
- Zone
- Middle swimmer
- Temp
- 75–81°F (24–27°C)
Butterfly Plecostomus L168
Dekeyseria picta
- Adult size
- ≤ 5.9" (≤ 15 cm)
- Aquarium size
- 66 US gal (250 L) or larger / ≥ 47.2" (≥ 120 cm) minimum length
- Temperament
- Peaceful
- Zone
- Bottom dweller
- Temp
- 72–77°F (22–25°C)
Butterfly Splitfin Goodeid
Ameca splendens
- Adult size
- ≤ 3.5" (≤ 9 cm)
- Aquarium size
- 66 US gal (250 L) or larger / ≥ 35.4" (≥ 90 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- Middle to top swimmer
- Temp
- 68–77°F (20–25°C)
Calvus Cichlid
Altolamprologus calvus
- Adult size
- ≤ 5.4" (≤ 13.8 cm)
- Aquarium size
- 53 US gal (200 L) or larger / ≥ 35.8" (≥ 91 cm) minimum length
- Temperament
- Peaceful
- Zone
- All-zone swimmer
- Temp
- 75–81°F (24–27°C)
Cardinal Brachyrhaphis
Brachyrhaphis roseni
- Adult size
- ≤ 2.4" (≤ 6 cm)
- Aquarium size
- 30 US gal (112 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Semi-Aggressive
- Zone
- All-zone swimmer
- Temp
- 70–86°F (21–30°C)
Cardinal Tetra
Paracheirodon axelrodi
- Adult size
- 1.6" (4 cm)
- Aquarium size
- 20 US gal (75 L) or larger / ≥ 23.6" (≥ 60 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 75–82°F (24–28°C)
Celebes Halfbeak
Nomorhamphus liemi
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 40 US gal (150 L) or larger / ≥ 39.4" (≥ 100 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–75°F (20–24°C)
Celebes Rainbowfish
Marosatherina ladigesi
- Adult size
- ≤ 3.1" (≤ 8 cm)
- Aquarium size
- 32 US gal (120 L) or larger / ≥ 29.9" (≥ 76 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 72–82°F (22–28°C)
Celebes Ricefish
Oryzias celebensis
- Adult size
- ≤ 1.8" (≤ 4.5 cm)
- Aquarium size
- 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle swimmer
- Temp
- 73–81°F (23–27°C)
Celestial Pearl Danio
Danio margaritatus
- Adult size
- ≤ 0.8" (≤ 2.1 cm)
- Aquarium size
- 11 US gal (41 L) or larger / ≥ 17.7" (≥ 45 cm) minimum length
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 68–79°F (20–26°C)
Cenepa Red Pencilfish
Nannstomus sp.
- Adult size
- ≤ 1.4" (≤ 3.5 cm)
- Temperament
- Peaceful
- Zone
- Middle to top swimmer
- Temp
- 73–81°F (23–27°C)
