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

Salween Barb

Salween Barb

Fish

Hampala salweenensis

A rare Salween barb that hunts by suction and needs to be kept in groups.

Salween Grazer

Salween Grazer

Fish

Garra salweenica

A blunt-snouted Salween grazer with a curious three-lobed proboscis.

Salween Loach

Salween Loach

Fish

Acanthocobitis zonalternans

A camouflaged Salween loach that thrives in groups and rewards patient keepers.

Sanggau Betta

Sanggau Betta

Fish

Betta antoni

A soft-water mouthbrooder from Borneo with iridescent blue scales and complex breeding behavior.

Sarasin's Minnow

Sarasin's Minnow

Fish

Oryzias sarasinorum

A rare Sulawesi ricefish with a truly bizarre egg-carrying trick

Scissortail Barb
✨AI

Scissortail Barb

Fish

Rasbora rasbora

A large, peaceful schooling rasbora rarely seen outside specialist collections.

Scissortail Rasbora

Scissortail Rasbora

Fish

Rasbora trilineata

The tail-flicking schooler that earns its name every time it rests.

Scooter Loach

Scooter Loach

Fish

Barbucca diabolica

A belly-crawling 'scooter' loach that rarely leaves the substrate.

Serian Borneo sucker

Serian Borneo sucker

Fish

Gastromyzon scitulus

A tiny Bornean torrent-dweller that clings to rocks and grazes algae in miniature rapids.

Shadow Catfish

Shadow Catfish

Fish

Hyalobagrus flavus

A tiny, sociable catfish that actually swims in the open. And has a fish that mimics it.

Shark Minnow

Shark Minnow

Fish

Luciosoma bleekeri

A fast-moving surface predator that needs serious space to thrive.

Sharp-nosed Gourami
✨AI

Sharp-nosed Gourami

Fish

Sphaerichthys acrostoma

A rare Bornean mouthbrooder from blackwater streams, gentle and quirky in equal measure.

Siamese Algae Eater

Siamese Algae Eater

Fish

Crossocheilus oblongus

The algae eater that actually eats algae, including the tough stuff other fish ignore.

Siamese Algae Eater

Siamese Algae Eater

Fish

Crossocheilus atrilimes

The real Siamese algae eater. If you can tell it apart from its lookalikes.

Siamese Algae Eater

Siamese Algae Eater

Fish

Crossocheilus langei

The real Siamese algae eater is harder to identify than you'd think.

Siamese Algae Eater
✨AI

Siamese Algae Eater

Fish

Crossocheilus siamensisis

The genuine algae-eating workhorse that actually earns its keep in a planted tank.

Siamese Badis

Siamese Badis

Fish

Badis siamensis

A rare Thai cave-spawner with detailed patterning and fascinating paternal instincts.

Siamese Flying Fox

Siamese Flying Fox

Fish

Crossocheilus siamensis

A tireless algae grazer that earns its keep in planted tanks.

Siamese Mud Carp

Siamese Mud Carp

Fish

Gymnostomus siamensis

A plain silver river wanderer that follows the floods across Southeast Asia.

Sidestripe rasbora

Sidestripe rasbora

Fish

Rasbora paviana

A peaceful, stripe-sided stream fish that thrives in groups and suits most community tanks.

Silver rasbora

Silver rasbora

Fish

Rasbora dusonensis

A boldly striped schooling rasbora with a vivid yellow tail fin.

Silver Rasbora

Silver Rasbora

Fish

Rasbora argyrotaenia

A sleek, fast-moving schooler built for larger river setups

Silver Tiger Fish

Silver Tiger Fish

Fish

Datnioides polota

A bold, bar-patterned predator that bridges freshwater rivers and brackish coastal zones.

Simor Fighter

Simor Fighter

Fish

Betta simorum

A shy wild betta from Indonesian blackwater that rewards patient, dedicated keepers.

Skunk Loach

Skunk Loach

Fish

Yasuhikotakia morleti

A feisty, burrowing loach with complex social behavior and a bold personality.

Sky Blue Borneo sucker

Sky Blue Borneo sucker

Fish

Gastromyzon aeroides

A rare Bornean hillstream loach with vivid blue fins found in almost no aquariums yet.

Slender Betta

Slender Betta

Fish

Betta bellica

A slender peat swamp betta that rewards patient, thoughtful keepers

Slimy Loach

Slimy Loach

Fish

Pangio myersi

A social, eel-like loach that piles into hiding spots with its companions.

Smallfin Fighter

Smallfin Fighter

Fish

Betta miniopinna

A tiny, dark peat-swamp Betta with vivid red pelvic fins and a gentle nature.

Smallscale Archerfish

Smallscale Archerfish

Fish

Toxotes microlepis

The freshwater archer that hunts insects by spitting water with sniper precision.

Smokey Glass Catfish

Smokey Glass Catfish

Fish

Kryptopterus cryptopterus

A ghostly schooling catfish that disappears against the current

Snakehead Betta

Snakehead Betta

Fish

Betta channoides

A tiny, peaceful mouthbrooder from Borneo's blackwater forest streams.

Snakeskin Barb

Snakeskin Barb

Fish

Desmopuntius rhomboocellatus

A peaceful Bornean barb that really comes alive in a proper-sized school.

Snake-skin Gourami

Snake-skin Gourami

Fish

Trichopodus pectoralis

A big, peaceful gourami with wild origins in the flooded forests of Southeast Asia.

Snakeskin Gourami
✨AI

Snakeskin Gourami

Fish

Trichogaster pectoralis

A gentle giant gourami that thrives where few fish could survive.

Somphongs's Rasbora

Somphongs's Rasbora

Fish

Trigonostigma somphongsi

One of the rarest aquarium fish alive, rescued from the edge of extinction.