Scientific name: Luciobarbus subquincunciatus
Range: Tigris-Euphrates river system in Eastern Turkey, Eastern Syria, Iran, Iraq
When last seen: One specimen was caught in 2011.
Suspected reason for disappearance: Overfishing, habitat loss, eutrophication, dam construction and water abstraction.
IUCN conservation status: Critically Endangered
Facts: Also known as the leopard barbel or spot barb. Was once abundant in certain locations but has declined rapidly over the past 30 years or more.
Size: Grows up to 60cm.