Triakidae
Indonesian Houndshark
Hemitriakis indroyonoi
FISH SPECIES
The aquatic fauna of Asia represents one of the most evolutionarily diverse continental assemblages on Earth, shaped by tectonic collisions, monsoon hydrology, and deep biogeographic divides. Stretching from the subarctic Siberian drainages to the equatorial peat swamps of Sundaland, the continent encompasses thousands of endemic fish species adapted to radically disparate physical environments.
01 / NATURAL HISTORY
Nowhere is the dynamic nature of Asian riverine ecology clearer than in the Mekong River basin. Draining the Tibetan Plateau through six nations before emptying into the South China Sea, the Mekong supports the second-richest freshwater fish fauna in the world after the Amazon, harboring more than a thousand cataloged species.
02 / LIFESTYLE
In Southeast Asia, historical sea levels and tectonic boundaries have produced sharp faunal contrasts across short geographic distances. During Pleistocene glacial maxima, lower sea levels exposed the Sunda Shelf, physically linking modern Borneo, Sumatra, Java, and the Malay Peninsula into a single contiguous landmass known as Sundaland. Freshwater fishes, particularly the species-rich families Cyprinidae (carps and minnows), Siluridae (catfishes), and Osphronemidae (gouramis), expanded freely across ancient river valleys that are now submerged beneath the South China Sea.
OBSERVATION INDEX
03 / SPECIES
Discover representative species illustrating the ecological diversity, morphologies and adaptations of this group.
Triakidae
Hemitriakis indroyonoi
Pristolepididae
Pristolepis grootii
Anguillidae
Anguilla borneensis
Anguillidae
Anguilla malgumora
Pleuronectidae
Psammodiscus ocellatus
Acanthuridae
Prionurus chrysurus
Dasyatidae
Telatrygon biasa
Rhinobatidae
Rhinobatos penggali
Lutjanidae
Lutjanus bitaeniatus
Pentanchidae
Halaelurus maculosus
Cobitidae
Lepidocephalus macrochir
Paedocyprididae
Paedocypris progenetica
Carcharhinidae
Carcharhinus tjutjot
Orectolobidae
Orectolobus leptolineatus
Nemacheilidae
Triplophysa leptosoma
Nemacheilidae
Triplophysa tenuis
Cyprinidae
Barilius modestus
Ailiidae
Clupisoma naziri
Cyprinidae
Cyprinion watsoni
Cyprinidae
Ptychobarbus conirostris
Gobiidae
Cryptocentrus inexplicatus
Macrouridae
Macrouroides inflaticeps
Cyprinidae
Cyprinus intha
Mastacembelidae
Macrognathus caudiocellatus
04 / FIELD NOTES
No. These are available published records with images, not an exhaustive inventory or a measure of abundance.
Follow the scientific name and source, check the scope of the evidence, and send a correction with the exact claim if needed.