The Long Jaw, which lived in lakes and ate zooplankton and other small fish, was one of only a few "paternal mouthbrooder" species, meaning that the male cared for the eggs instead of the female, holding them in his mouth for protection.
This species was endemic to the Kinneret Lake in Israel (also known as the Sea of Tiberius and the Sea of Galilee). Long Jaws were listed as critically endangered in 2006 and then re-listed as extinct in 2014.
Researchers suggest breeding habitat destruction in the lake's marshy northern area contributed to the Long Jaws' disappearance, but the exact reason for extinction is unknown.
