Aquariumpro
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RegionFreshwaterBrackish

Southeast Asia

The Mekong, Chao Phraya, and the rivers of Borneo, Sumatra, and Java — home to bettas, gouramis, rasboras, barbs, and many iconic community fish.

460 species · freshwater

Other regions in Asia

Black Dwarf Betta

Black Dwarf Betta

Fish

Betta persephone

A velvety black pygmy betta from some of the world's most acidic swamps.

Black Imbellis

Black Imbellis

Fish

Betta siamorientalis

A tiny bubble-nesting betta with a blackish body and vivid red fin details.

Black Kuhli Loach

Black Kuhli Loach

Fish

Pangio oblonga

A slender, uniformly dark loach that loves company and hides in plain sight.

Black Lancer
✨AI

Black Lancer

Fish

Bagrichthys hypselopterus

A deep-river Asian catfish with an impressively tall dorsal fin and bold personality.

Black-lined Loach

Black-lined Loach

Fish

Ambastaia nigrolineata

A rare, sociable loach with bold racing stripes and fascinating group behaviors.

Blackline Rasbora

Blackline Rasbora

Fish

Rasbora borapetensis

A peaceful schooling fish with a vivid red tail that really shines in a group.

Black Lizard Loach

Black Lizard Loach

Fish

Balitoropsis zollingeri

A flat-bodied stream crawler that hops and clings across rocks like no other loach.

Black Paradise Fish

Black Paradise Fish

Fish

Macropodus spechti

A close paradise fish relative that thrives where others struggle.

Black Rabbit Snail
✨AI

Black Rabbit Snail

Invert

Tylomelania zemis

A slow-moving, long-lived snail that grazes peacefully and breeds one giant baby at a time.

Black Sharkminnow

Black Sharkminnow

Fish

Labeo chrysophekadion

A dramatically dark, shark-shaped giant that outgrows most home tanks.

Black Snakehead

Black Snakehead

Fish

Channa melasoma

A compact, nocturnal predator built for dark, acidic forest streams.

Blacktail Catfish

Blacktail Catfish

Fish

Hemibagrus wyckii

A river giant that sees humans as a threat. And acts on it.

Bleher's Rainbowfish

Bleher's Rainbowfish

Fish

Chilatherina bleheri

A brilliantly colored rainbowfish from one remote Indonesian lake, worth every bit of effort.

Blind Cave Loach
✨AI

Blind Cave Loach

Fish

Nemacheilus troglocataractus

A blind, cave-dwelling loach from a single Thai cave system.

Blind Cave Loach
✨AI

Blind Cave Loach

Fish

Schistura jarutanini

A blind cave loach from Thailand that science knows from just 22 specimens.

Blotched Snakehead

Blotched Snakehead

Fish

Channa maculata

A predatory bruiser that breathes air and guards its young with fierce devotion.

Blue Botia

Blue Botia

Fish

Yasuhikotakia modesta

A sociable Mekong loach with vivid fins and a complex social life.

Blue danio

Blue danio

Fish

Danio kerri

A powder-blue schooling gem from the Malay Peninsula that's rarely seen but easy to keep.

Blue Hillstream Trout

Blue Hillstream Trout

Fish

Opsarius bernatziki

A fast, bold hillstream schooler with vivid blue flank bars and serious attitude.

Blue Leg Poso Shrimp
✨AI

Blue Leg Poso Shrimp

Invert

Caridina cf babaulti

A delicate little shrimp from an ancient Indonesian lake with vivid blue legs.

Blue-lined Rasbora

Blue-lined Rasbora

Fish

Trigonopoma gracile

A delicate blackwater rasbora with variable color forms from Borneo's forest streams.

Blueline rasbora

Blueline rasbora

Fish

Rasbora einthovenii

A peaceful forest-stream rasbora with a charmingly crinkled lateral stripe.

Blue Neon Goby

Blue Neon Goby

Fish

Stiphodon atropurpureus

A thumbnail-sized stream goby that grazes biofilm and occasionally vanishes into the sand.

Blue Neon Sheatfish
✨AI

Blue Neon Sheatfish

Fish

Kryptopterus apogon

A massive river predator sometimes sold to unsuspecting buyers as a cute juvenile.

Boeseman's Rainbowfish

Boeseman's Rainbowfish

Fish

Melanotaenia boesemani

Two fish in one body: bold orange rear, cool blue-grey front.

Boomerang Barb
✨AI

Boomerang Barb

Fish

Desmopuntius foerschi

A tiny blackwater barb with bold vertical bars and a lively schooling personality.

Bornean Eye-spot Silver Shark

Bornean Eye-spot Silver Shark

Fish

Labiobarbus ocellatus

A peaceful schooling cyprinid with a distinctive shoulder spot and shy streak.

Bornean Minnow

Bornean Minnow

Fish

Nematabramis borneensis

A slender Bornean minnow with notably long barbels and a bold lateral stripe.

Bornean Puffer
✨AI

Bornean Puffer

Fish

Carinotetraodon borneensis

A pint-sized Bornean puffer with outsized personality and a very limited range.

Bornean Rasbora

Bornean Rasbora

Fish

Rasbora sarawakensis

A tiny, peaceful Bornean rasbora that's rarely seen but well worth seeking out.

Borneo Loach

Borneo Loach

Fish

Pangio shelfordii

A patterned eel-loach from Borneo's blackwater forests, with surprising personality for its size.

Borneo Sucker

Borneo Sucker

Fish

Gastromyzon ctenocephalus

A tiny Bornean hillstream crawler with iridescent blue fins and bold spotted patterns.

Borneo Sucker

Borneo Sucker

Fish

Gastromyzon farragus

A tiny Bornean stream-clinger with a vivid red tail and bold territorial streaks.

Borneo Sucker

Borneo Sucker

Fish

Gastromyzon stellatus

A boldly spotted Bornean stream crawler that grazes rocks like a tiny vacuum.

Brittan's rasbora

Brittan's rasbora

Fish

Rasbora brittani

A dainty, peaceful schooler that thrives in soft, shaded Southeast Asian-style setups.

Brown's Betta

Brown's Betta

Fish

Betta brownorum

A jewel of the peat swamps, with a glowing green flank spot unlike any other Betta.