Umbridae

Umbridae is a family of fish in the order Esociformes, which contains pike, pickerel, and mudminnows. The single living genus, "Umbra", occupies weed-choked freshwater habitats in eastern North America and eastern Europe. 
Studies.
While the family contained the genera "Umbra", "Novumbra", and "Dallia", recent studies have recovered this grouping as paraphyletic, with "Novumbra" and "Dallia" being moved to the family Esocidae.