01
Nov
Tuna, swordfish, and some species of sharks show some warm-blooded adaptations– they can warmth their bodies considerably above ambient water temperature. Streamlining and swimming performance varies from fish similar to tuna, salmon, and jacks that can cover 10–20 body-lengths per second to species such as eels and rays that swim not extra than zero.5 body-lengths per second. Many groups of freshwater fish extract oxygen from the air in addition to from the water using a variety of completely different buildings. Body form and the arrangement of the fins is highly variable, masking such seemingly un-fishlike forms as seahorses, pufferfish, anglerfish,…