Agonidae
fourhorn poacher
Hypsagonus quadricornis
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.
Agonidae
Hypsagonus quadricornis
Cottidae
Myoxocephalus quadricornis
Labridae
Bodianus leucosticticus
Terapontidae
Pelates quadrilineatus
Cynoglossidae
Cynoglossus bilineatus
Epinephelidae
Epinephelus spilotoceps
Chaetodontidae
Chaetodon quadrimaculatus
Dorosomatidae
Herklotsichthys quadrimaculatus
Tripterygiidae
Helcogramma fuscipectoris
Congridae
Bathyuroconger fowleri
Blenniidae
Litobranchus fowleri
Acanthuridae
Acanthurus fowleri
Bothidae
Psettina variegata
Sebastidae
Sebastes vulpes
Alopiidae
Alopias pelagicus
Apogonidae
Zoramia viridiventer
Myctophidae
Diaphus fragilis
Apogonidae
Cercamia cladara
Osphronemidae
Ctenops nobilis
Apogonidae
Ostorhinchus franssedai
Cyprinidae
Devario fraseri
Ictaluridae
Noturus munitus
Hemiscylliidae
Hemiscyllium freycineti
Percidae
Percina lenticula
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.