Fish live in many different aquatic habitats, from small ponds to large oceans. Fish ha
(ve) gills a
(nd) other spe
(cial) adaptations th
(at) help th
(em) breathe under
(water). Fins al
(low) them t
(o) move effic
(iently) to fi
(nd) food and to escape from danger. Some fish can live in both fresh and saltwater, while others are adapted to live only in one type. Aquatic habitats are important ecosystems that support a wide variety of life.