From the deep ocean to freshwater streams, aquatic habitats are diverse in factors like temperature and level of oxygen. Fish ha
(ve)developed nume
(rous)adaptations t
(o) survive i
(n) different enviro
(nments).Streamlined bod
(ies)that red
(uce)water resis
(tance)are o
(ne)example. Tuna a
(nd)some other fish species have specialized blood vessels that help maintain a higher body temperature. which allows them to be active even in very cold waters. And, although most fish use gills to extract oxygen from water, lungfish can survive in oxygen-poor habitats thanks to their lungs.
