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Flatfish
Flatfish
Flatfish are asymmetric, with both eyes lying on the same side of the head
Flatfish are asymmetric, with both eyes lying on the same side of the head
Fossil of Amphistium
Fossil of Amphistium
The European plaice is the principal commercial flatfish in Europe.
The European plaice is the principal commercial flatfish in Europe.
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Actinopterygii
Actinopterygii
Anatomy of a typical ray-finned fish (cichlid) A: dorsal fin, B: fin rays, C: lateral line, D: kidney, E: swim bladder, F: Weberian apparatus, G: inne
Anatomy of a typical ray-finned fish (cichlid) A: dorsal fin, B: fin rays, C: lateral line, D: kidney, E: swim bladder, F: Weberian apparatus, G: inner ear, H: brain, I: nostrils, L: eye, M: gills, N: heart, O: stomach, P: gall bladder, Q: spleen, R: internal sex organs (ovaries or testes), S: ventral fins, T: spine, U: anal fin, V: tail (caudal fin). Possible other parts not shown: barbels, adipose fin, external genitalia (gonopodium)
Tuna are streamlined for straight line speed with a deeply forked tail
Tuna are streamlined for straight line speed with a deeply forked tail
Cod have three dorsal and two anal fins, which give them great maneuverability
Cod have three dorsal and two anal fins, which give them great maneuverability