Talk:Fish anatomy

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Would anyone happen to have info on fish brain? I came here to look for whether fish can feel pain or not (someone said they can't because they're missing that part of the brain). Now I don't want to write the section myself, as I obviously don't know anything about fish brains... --HJV 15:58, 16 March 2006 (UTC)

[edit] Fish - Anatomy

Can someone tell me if the following is true

Fish have very good eyesight and can see in all directions at the same time

Fish have airbag which help to stay upright

Fish that use eyesight for hunting may have good eyesight. Many fish have laterally placed eyes (on the side of their head)so they can see predators approaching. However, some fish have eyes located more dorsally (towards the top of their head). This allows them to see more in front of them. These fish may have grooves in front of their eyes, this lets them see over their nose. So for fish with dorsal eye placement and eye grooves, they have a wide viewing range. The airbag you mention is called a swim bladder. It is a sac of air that the fish can inflate or deflate depending on if they want to go up or down in the water or respond to pressure changesRanled 03:29, 20 November 2006 (UTC).

[edit] Fin Use

Could someone add for what each fin is used?

It varies from species to species. For example, most species use the caudal fin for propulsion, but triggerfishes use their dorsal and anal fins and wrasses use their pectoral fins. Male livebearers use their anal fins to impregnate females. Some fishes, such as knifefishes of the family Notopteridae, don't even have a caudal fin. --Ginkgo100 19:10, 26 May 2006 (UTC)