Giant salmon carp

The giant salmon carp  (Aaptosyax grypus), also termed the Mekong giant salmon carp, is a species of freshwater fish in the family Cyprinidae and the single species in the monotypic genus Aaptosyax. It is endemic to the middle reaches of the Mekong River in northern Cambodia, Laos and Thailand. Its population is much reduced (>90%) as a result of overfishing and habitat degradation, and it is now considered Critically Endangered.

This fish can reach a length of 130 cm and weight of 30 kg. Until 2022 no adult individuals had been seen of this species, until a specimen was found at a fish market.