Habitat and Distribution A. Distribution. Bony fishes inhabit almost every body of water. They are found in tropical, temperate, and polar seas.
Bony fishes exist in fresh water, seawater, and brackish environments.
Some species of bony fishes aren't limited to one particular ecosystem. Diadromous bony fish species migrate between fresh and saline environments. Depending on the species, bony fishes can live at various temperatures. Some live at extreme temperatures. At the opposite extreme, some species of bony fishes can survive freezing as long as their body fluids remain unfrozen.