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.
427 species · freshwater · fish
Other regions in Asia
Rice Eel or Rice Field Eel
FishMonopterus albus
A land-crossing, air-breathing swamp predator that isn't actually an eel at all.
Rosy Danio
FishDanio roseus
A rosy-hued schooling danio that thrives in lively community tanks.
Rosy Loach
FishYunnanilus sp. "Rosy"
A rosy little loach that punches above its weight in personality.
Royal Featherback
FishChitala blanci
A massive Mekong predator that will outgrow almost any home aquarium.
Sabah Danio
FishNematabramis everetti
A Bornean river minnow with dramatically long barbels and a bold shoulder patch.
Sabanus Bumblebee Goby
FishBrachygobius sabanus
A tiny brackish goby with bold banding and a big territorial attitude.
Saddle Barb
FishBarbodes banksi
A rare Bornean barb with a distinctive wedge marking, seldom seen outside specialist circles.
Salween Barb
FishHampala salweenensis
A rare Salween barb that hunts by suction and needs to be kept in groups.
Salween Grazer
FishGarra salweenica
A blunt-snouted Salween grazer with a curious three-lobed proboscis.
Salween Loach
FishAcanthocobitis zonalternans
A camouflaged Salween loach that thrives in groups and rewards patient keepers.
Sanggau Betta
FishBetta antoni
A soft-water mouthbrooder from Borneo with iridescent blue scales and complex breeding behavior.
Sarasin's Minnow
FishOryzias sarasinorum
A rare Sulawesi ricefish with a truly bizarre egg-carrying trick
Scissortail Barb
FishRasbora rasbora
A large, peaceful schooling rasbora rarely seen outside specialist collections.
Scissortail Rasbora
FishRasbora trilineata
The tail-flicking schooler that earns its name every time it rests.
Scooter Loach
FishBarbucca diabolica
A belly-crawling 'scooter' loach that rarely leaves the substrate.
Serian Borneo sucker
FishGastromyzon scitulus
A tiny Bornean torrent-dweller that clings to rocks and grazes algae in miniature rapids.
Shadow Catfish
FishHyalobagrus flavus
A tiny, sociable catfish that actually swims in the open. And has a fish that mimics it.
Shark Minnow
FishLuciosoma bleekeri
A fast-moving surface predator that needs serious space to thrive.
Sharp-nosed Gourami
FishSphaerichthys acrostoma
A rare Bornean mouthbrooder from blackwater streams, gentle and quirky in equal measure.
Siamese Algae Eater
FishCrossocheilus oblongus
The algae eater that actually eats algae, including the tough stuff other fish ignore.
Siamese Algae Eater
FishCrossocheilus atrilimes
The real Siamese algae eater. If you can tell it apart from its lookalikes.
Siamese Algae Eater
FishCrossocheilus langei
The real Siamese algae eater is harder to identify than you'd think.
Siamese Algae Eater
FishCrossocheilus siamensisis
The genuine algae-eating workhorse that actually earns its keep in a planted tank.
Siamese Badis
FishBadis siamensis
A rare Thai cave-spawner with detailed patterning and fascinating paternal instincts.
Siamese Flying Fox
FishCrossocheilus siamensis
A tireless algae grazer that earns its keep in planted tanks.
Siamese Mud Carp
FishGymnostomus siamensis
A plain silver river wanderer that follows the floods across Southeast Asia.
Sidestripe rasbora
FishRasbora paviana
A peaceful, stripe-sided stream fish that thrives in groups and suits most community tanks.
Silver rasbora
FishRasbora dusonensis
A boldly striped schooling rasbora with a vivid yellow tail fin.
Silver Rasbora
FishRasbora argyrotaenia
A sleek, fast-moving schooler built for larger river setups
Silver Tiger Fish
FishDatnioides polota
A bold, bar-patterned predator that bridges freshwater rivers and brackish coastal zones.
Simor Fighter
FishBetta simorum
A shy wild betta from Indonesian blackwater that rewards patient, dedicated keepers.
Skunk Loach
FishYasuhikotakia morleti
A feisty, burrowing loach with complex social behavior and a bold personality.
Sky Blue Borneo sucker
FishGastromyzon aeroides
A rare Bornean hillstream loach with vivid blue fins found in almost no aquariums yet.
Slender Betta
FishBetta bellica
A slender peat swamp betta that rewards patient, thoughtful keepers
Slimy Loach
FishPangio myersi
A social, eel-like loach that piles into hiding spots with its companions.
Smallfin Fighter
FishBetta miniopinna
A tiny, dark peat-swamp Betta with vivid red pelvic fins and a gentle nature.