are bony fish endothermic or ectothermic
Osteichthyes are a very diverse group of bony fish. They are Ectothermic, which means they depend on the surrounding environment for their body temperatures. Osteichthyes live in all types of fresh and salt waters.steichthyes (Bony Fish) are the most species-rich and morphologically diverse lineage of all vertebrates. 1  brain. 2  spinal cord. 3  cranial nerves. 4  spinal nerves. 5  sensory organs 6  -. eyes-good eyesight. 7  no eyelids, thus permitting a maximum amount of. 8  light. 9  ears-no external opening.