Beyşehir bleak Beyşehir bleak The Beyşehir bleak ("Alburnus akili"), known in Turkish as gökçe balığı, was a species of freshwater fish in the family Cyprinidae, now presumed extinct. The Beyşehir bleak was endemic to Lake Beyşehir in Central Anatolia, Turkey. It declined after the introduction of "Sander lucioperca" (zander or pikeperch) into the lake in 1955, and the introduction of "A. escherichii". Overfishing also seems to have contributed to the extinction. The fish was last seen in 1998 and is now listed as extinct by the IUCN. This was a short-lived species, growing to 13–16 cm long. The Turkish name "gökçe balığı"
David B. Bleak hands, killing him. Bleak was then confronted by a second soldier, whom he reportedly grabbed by the neck, fatally crushing his windpipe. A third Chinese soldier then approached, and in the ensuing scuffle, Bleak used his combat knife to kill him. Bleak then returned to the patrol and attempted to treat more wounded members, but soon thereafter a Chinese hand grenade bounced off the helmet of the soldier standing next to him and landed nearby. Bleak tackled the soldier and covered him with his larger frame to protect him from the grenade, but neither was injured in the ensuing blast.