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Seen in this picture are (1) – operculum (gill cover), (2) – lateral line, (3) – dorsal fin, (4) – adipose fin, (5) – caudal peduncle, (6) – caudal fin, (7) – anal fin, (8) – photophores, (9) – pelvic fins (paired), (10) – pectoral fins (paired).
57:. Their body is divided into head, trunk, and tail, although the dividing points are not always externally visible. The body is often 94: 31: 21: 107: 140: 134: 119: 38: 17: 46:, which is much denser than air, holds a relatively small amount of dissolved 69: 63:, a streamlined body plan often found in fast-moving fish. They may also be 59: 54: 47: 43: 87: 42:
is primarily governed by the physical characteristics of
73:(worm-shaped). Also, fish are often either laterally 8: 50:, and absorbs light more than air does. 7: 28: 53:Fish have a variety of different 30: 1: 157: 77:(thin) or vertically 129: 128: 122: 110: 97: 148: 118: 106: 93: 88: 67:(eel-shaped) or 34: 22:Selected article 156: 155: 151: 150: 149: 147: 146: 145: 131: 130: 125: 112: 99: 35: 26: 25: 24: 12: 11: 5: 154: 152: 144: 143: 133: 132: 127: 126: 115: 113: 104: 102: 100: 91: 29: 27: 15: 14: 13: 10: 9: 6: 4: 3: 2: 153: 142: 139: 138: 136: 124: 123: 121: 114: 111: 109: 103: 101: 98: 96: 90: 89: 86: 82: 80: 76: 72: 71: 66: 62: 61: 56: 51: 49: 45: 41: 40: 33: 23: 19: 120:Read more... 117: 116: 105: 92: 83: 78: 74: 68: 64: 58: 52: 39:Fish anatomy 37: 36: 141:Fish portal 108:Nominations 18:Portal:Fish 95:...Archive 75:compressed 55:body plans 79:depressed 70:vermiform 135:Category 81:(flat). 65:filiform 60:fusiform 20:‎ | 48:oxygen 44:water 16:< 137::

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