Fish That Start With B

30 fish Animals and nature Checked 9 Oct 2026

Here are 30 fish that start with B, each with a one-line description so you can tell what it is. The best-known ones come first, then the full list in A to Z order.

B gives you 30 fish, a mix of sport fish, aquarium favorites and sharks. Bass, bluegill and brown trout are names anglers know, while the betta is a colorful pet with flowing fins.

Three sharks appear: the bull shark, the blue shark and the basking shark, a huge but harmless plankton eater. The blowfish can puff itself up, and the barracuda has a long body and sharp teeth. Color words drive many names, such as bluefin, bluefish and blue runner. The beluga listed here is a fish known for caviar, not the white whale.

Fish starting with B: 30
Best known: bass, barracuda
Longest name: butterfly fish

Best-known fish that start with B

The ones most people will recognise, good for school lists, quizzes and games.

bass
barracuda
bull shark
blowfish
brown trout
bluegill
basking shark
barramundi
betta

All fish that start with B

#	Name	What it is
1	barracuda	any voracious marine fish of the genus Sphyraena having an elongated cylindrical body and large mouth with projecting...
2	barramundi	large Asian and Australian sea bass prized as food
3	basking shark	large harmless plankton-eating northern shark; often swims slowly or floats at the sea surface
4	bass	nontechnical name for any of numerous edible marine and freshwater spiny-finned fishes
5	beluga	valuable source of caviar and isinglass; found in Black and Caspian seas
6	betta	colorful freshwater fish with flowing fins kept in aquariums
7	bigeye	red fishes of American coastal tropical waters having very large eyes and rough scales
8	billfish	giant warm-water game fish having a prolonged and rounded toothless upper jaw
9	black bass	bluish black-striped sea bass of the Atlantic coast of the United States
10	black marlin	large game fish in the Pacific Ocean; may reach 1000 pounds
11	blowfish	any of numerous marine fishes whose elongated spiny body can inflate itself with water or air to form a globe
12	blue catfish	a large catfish of the Mississippi valley
13	blue marlin	largest marlin; may reach 2000 pounds; found worldwide in warm seas
14	blue runner	fish of western Atlantic: Cape Cod to Brazil
15	blue shark	slender cosmopolitan, pelagic shark; blue body shades to white belly; dangerous especially during maritime disasters
16	bluefin	largest tuna; to 1500 pounds; of mostly temperate seas: feed in polar regions but breed in tropics
17	bluefish	bluish warm-water marine food and game fish that follow schools of small fishes into shallow waters
18	bluegill	important edible sunfish of eastern and central United States
19	bonefish	slender silvery marine fish found in tropical mud flats and mangrove lagoons
20	bonito	any of various scombroid fishes intermediate in size and characteristics between mackerels and tunas
21	bonnet shark	small harmless hammerhead having a spade-shaped head; abundant in bays and estuaries
22	bream	any of various usually edible freshwater percoid fishes having compressed bodies and shiny scales
23	brill	European food fish
24	brook trout	North American freshwater trout; introduced in Europe
25	brown trout	speckled trout of European rivers; introduced in North America
26	buffalo fish	any of several large suckers of the Mississippi valley
27	bull shark	a most common shark in temperate and tropical coastal waters worldwide; heavy-bodied and dangerous
28	bullhead	freshwater sculpin with a large flattened bony-plated head with hornlike spines
29	butterfly fish	small usually brilliantly colored tropical marine fishes having narrow deep bodies with large broad fins
30	butterfly ray	a stingray with a short tail and a broad fin

Short fish with B

bass
betta
brill
bream

Questions people ask

How many fish start with B?

This list has 30 fish starting with B, from well-known ones like bass, barracuda, bull shark to rarer kinds.

What fish start with B?

Well-known examples are bass, barracuda, bull shark, blowfish, brown trout, bluegill, basking shark, barramundi.

Source: Princeton WordNet, a public dictionary database, reviewed by our editors to keep only clear, real members of the list. Meanings are short dictionary glosses.

See every letter on one page: fish A to Z