out of sand and mud. When unhealthy, the spots on this fish's belly often change color or move. References Munroe, T.A., 2002. Achiridae. American soles. p. 1925-1933. In K.E. Carpenter (ed.) FAO species identification guide for fishery purposes. The living marine resources of the Western Central Atlantic. Vol. 3: Bony fishes part 2 (Opistognathidae to Molidae), sea turtles and marine mammals Achiridae Fish of the Eastern United States Fish of the Gulf of Mexico Fish described in 1801 Taxa named by Marcus Elieser Bloch