Platypharodon
Platypharodon extremus
Species of fish
Platypharodon extremus is a species of cyprinid fish endemic to the upper Yellow River basin in the Qinghai–Tibet Plateau of China.[1][2] It is the only member of its genus, but is related to other schizothoracines (snowtrout and allies) like Aspiorhynchus, Chuanchia, Gymnocypris, Oxygymnocypris, Ptychobarbus, Schizopyge, Schizopygopsis and Schizothorax.[3][4]
P. extremus reaches up to 60 cm (2 ft) in length and 2.5 kg (5.5 lb) in weight.[5] Similar to Schizopygopsis, P. extremus has a horny sheath on the lower jaw and spoon-shaped teeth that it uses to scrape off periphyton and algae from stones, but it will also eat benthic invertebrates.[3][6]
An important food fish,[7] P. extremus has seriously declined and is now listed as vulnerable on China's Red List.[1] The species has been bred and raised in captivity,[1] and individuals are released back into the wild from two purposely built stations in an attempt of countering its threatened status.[6]