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An Introductory Guide i
FORM AND MOTION i
form and motion 2
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active Africa air-breathing anal fins angler-fishes animals barbel blennies blood body bones bony fishes bottom breeding butterfly-fishes cat-fishes caudal fin cavity cells characins cichlids close colour pattern coral countershading crustaceans cyprinids deep-sea fishes depth developed diverse dorsal and anal dorsal fin eels eggs electric organs eyes fauna feed female figure flying-fishes fresh waters freshwater fishes gill gland gobies hatch head jaws lampreys lantern-fishes larvae light organs luminous lung-fishes mackerel male marine fishes metres mid-water millimetres minnows mouth move muscles nest North ocean Ostariophysi oxygen pectoral fins pelvic fins pike pipe-fishes plaice plankton plate pneumatic duct predators prey range rat-tails ray-finned fishes rays reefs regions rivers salmon salt sea water sense organs sharks side skin snout South spawning species spines sticklebacks stomiatoids stream surface surgeon-fishes swim swimbladder tail fin teleost fishes teleosts temperate temperature trigger-fishes tropical trout tunny vertebrates wrasse yolk young