B
- Baikal oilfish
- Bala shark
- Ballan wrasse
- Bamboo shark
- Banded killifish
- Bandfish
- Bango
- Bangus
- Banjo catfish
- Barb
- Barbel
- Barbeled dragonfish
- Barbeled houndshark
- Barbelless catfish
- Barfish
- Barracuda
- Barracudina
- Barramundi
- Barred danio
- Barreleye
- Basking shark
- Bass
- Basslet
- Batfish
- Bat ray
- Beachsalmon
- Beaked salmon
- Beaked sandfish
- Beardfish
- Beluga sturgeon
- Bengal danio
- Bent-tooth
- Betta
- Bichir
- Bigeye
- Bigeye squaretail
- Bighead carp
- Bigmouth buffalo
- Bigscale
- Bigscale fish
- Bigscale pomfret
- Billfish
- Bitterling
- Black angelfish
- Black bass
- Black dragonfish
- Blackchin
- Blackfish
- Blacktip reef shark
- Black mackerel
- Black pickerel
- Black prickleback
- Black scalyfin
- Black sea bass
- Black scabbardfish
- Blacksmelt
- Black swallower
- Black tetra
- Black triggerfish
- Bleak
- Blenny
- Blind goby
- Blind shark
- Blobfish
- Blowfish
- Blue catfish
- Blue danio
- Blue-redstripe danio
- Blue eye
- Bluefin tuna
- Bluefish
- Bluegill
- Blue gourami
- Blue shark
- Blue triggerfish
- Blue whiting
- Bluntnose knifefish
- Bluntnose minnow
- Boafish
- Boarfish
- Bobtail snipe eel
- Bocaccio
- Boga
- Bombay duck
- Bonefish
- Bonito
- Bonnetmouth
- Bonytail chub
- Bonytongue
- Bottlenose
- Bowfin
- Boxfish
- Bramble shark
- Bream
- Bristlemouth
- Bristlenose catfish
- Broadband dogfish
- Brook lamprey
- Brook trout
- Brotula
- Brown trout
- Buffalofish
- Bullhead
- Bullhead shark
- Bull shark
- Bull trout
- Burbot
- Buri
- Burma danio
- Burrowing goby
- Butterfly ray
- Butterflyfish
Read more about this topic: List Of Common Fish Names