KnowraFreshwater fishLinked fromLinked fromThe 23 pages that link to Freshwater fish, each with the reason it gives.All 23Broader topic 4Related 1Narrower topic 16Compared with 2Salt glandCompared with: These fish face water gain and salt loss, the opposite pressure from many marine animals.Marine fishCompared with: Their habitats differ in salinity, though some species move between fresh and salt water.