jacksmelt

noun, plural jack·smelts, (especially collectively) jack·smelt.

1. a large silversides, Atherinopsis californiensis, found along the coast of California, that grows to a length of 22 inches (55 cm).

noun plural -smelts or -smelt

1. a marine teleost food fish, Atherinopsis californiensis, of American coastal waters of the North Pacific: family Atherinidae (silversides)