Beginner freshwater fish: B

All beginner freshwater fish whose common name starts with B, in alphabetical order. Each card links to its care guide.

27 species and 6 varieties

• 

  Balunga betta

  Betta balunga

  Freshwater
  2 in (5 cm) · 16 gal (60 L)72–81°F (22–27°C)

• 

  Banjo catfish

  Bunocephalus coracoideus

  Freshwater
  5.9 in (15 cm) · 25 gal (95 L)72–81°F (22–27°C)

• 

  Barred danio

  Devario pathirana

  Freshwater
  2.4 in (6 cm) · 24 gal (90 L)70–79°F (21–26°C)

• 

  Black band cory

  Osteogaster zygata

  Freshwater
  2.6 in (6.5 cm) · 21 gal (80 L)72–79°F (22–26°C)

• 

  Black molly

  Poecilia sphenops

  Freshwater·Brackish
  4.7 in (12 cm) · 24 gal (90 L)70–82°F (21–28°C)4 varieties

• 

  Black neon tetra

  Hyphessobrycon herbertaxelrodi

  Freshwater
  1.4 in (3.5 cm) · 16 gal (60 L)72–82°F (22–28°C)

• 

  Black paradise fish

  Macropodus spechti

  Freshwater
  3.1 in (8 cm) · 20 gal (75 L)68–82°F (20–28°C)

• 

  Black phantom tetra

  Hyphessobrycon megalopterus

  Freshwater
  1.4 in (3.6 cm) · 17 gal (65 L)70–82°F (21–28°C)

• 

  Black ruby barb

  Pethia nigrofasciata

  Freshwater
  2.4 in (6 cm) · 20 gal (75 L)72–79°F (22–26°C)

• 

  Black widow tetra

  Gymnocorymbus ternetzi

  Freshwater
  2.4 in (6 cm) · 20 gal (75 L)68–79°F (20–26°C)

• 

  Blackbelly limia

  Limia melanogaster

  Freshwater
  2.4 in (6 cm) · 16 gal (60 L)72–82°F (22–28°C)

• 

  Bleeding heart tetra

  Hyphessobrycon erythrostigma

  Freshwater
  2.4 in (6 cm) · 20 gal (75 L)70–81°F (21–27°C)

• 

  Blind cave tetra

  Astyanax mexicanus

  Freshwater
  4.7 in (12 cm) · 25 gal (95 L)70–77°F (21–25°C)

• 

  Blockhead cichlid

  Steatocranus casuarius

  Freshwater
  4.7 in (12 cm) · 25 gal (95 L)75–82°F (24–28°C)

• 

  Bloodfin tetra

  Aphyocharax anisitsi

  Freshwater
  2.2 in (5.5 cm) · 20 gal (75 L)72–82°F (22–28°C)

• 

  Blue danio

  Danio kerri

  Freshwater
  1.8 in (4.5 cm) · 11 gal (40 L)68–79°F (20–26°C)

• 

  Blue panchax

  Aplocheilus panchax

  Freshwater
  3.5 in (9 cm) · 20 gal (75 L)72–82°F (22–28°C)

• 

  Bluefin killifish

  Lucania goodei

  Freshwater
  2 in (5 cm) · 11 gal (40 L)64–77°F (18–25°C)

• 

  Bluefin notho

  Nothobranchius rachovii

  Freshwater
  2.4 in (6 cm) · 21 gal (80 L)68–75°F (20–24°C)

• 

  Bonita tetra

  Moenkhausia bonita

  Freshwater
  3.3 in (8.5 cm) · 29 gal (110 L)72–81°F (22–27°C)

• 

  Borneo tiger barb

  Puntigrus anchisporus

  Freshwater
  2.8 in (7 cm) · 29 gal (110 L)73–81°F (23–27°C)

• 

  Brilliant rasbora

  Rasbora einthovenii

  Freshwater
  3.5 in (9 cm) · 20 gal (75 L)72–82°F (22–28°C)

• 

  Bronze cory

  Osteogaster aenea

  Freshwater
  3 in (7.5 cm) · 20 gal (75 L)70–81°F (21–27°C)2 varieties

• 

  Brown spiketail paradisefish

  Pseudosphromenus dayi

  Freshwater
  2.6 in (6.5 cm) · 12 gal (45 L)68–82°F (20–28°C)

• 

  Buenos Aires tetra

  Psalidodon anisitsi

  Freshwater
  3 in (7.5 cm) · 25 gal (95 L)66–81°F (19–27°C)

• 

  Burmese badis

  Badis ruber

  Freshwater
  2 in (5 cm) · 20 gal (75 L)64–77°F (18–25°C)

• 

  Butterfly goodeid

  Ameca splendens

  Freshwater
  4.7 in (12 cm) · 24 gal (90 L)68–82°F (20–28°C)