Polynemidae
long-limb threadfin
Polydactylus longipes
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.
Polynemidae
Polydactylus longipes
Gobionidae
Microphysogobio longidorsalis
Nemipteridae
Parascolopsis tanyactis
Gobiidae
Eviota longirostris
Ambassidae
Ambassis interrupta
Triacanthidae
Pseudotriacanthus strigilifer
Callionymidae
Callionymus neptunius
Triacanthidae
Tripodichthys blochii
Liparidae
Paraliparis ruficometes
Labridae
Cirrhilabrus lanceolatus
Chlopsidae
Boehlkenchelys longidentata
Bagridae
Sperata aor
Pristidae
Pristis zijsron
Cottocomephoridae
Cottocomephorus inermis
Osphronemidae
Betta enisae
Pentanchidae
Apristurus herklotsi
Moridae
Laemonema longipes
Pseudochromidae
Manonichthys polynemus
Stomiidae
Bathophilus longipinnis
Gobiidae
Tryssogobius longipes
Macrouridae
Coryphaenoides longifilis
Epinephelidae
Epinephelus quoyanus
Centrophoridae
Centrophorus longipinnis
Cyprinidae
Opsariichthys evolans
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.