. Catalogue of the fresh-water fishes of Africa in the British museum (Natural history) ... Fishes; Freshwater animals. TILAPIA. 177 3 times. Head 1| to 2 times as long as broad ; snout with straight or convex upper profile, a little broader than long, f to | postocular part of head ; eye 3 (young) to 4^ times in length of head, 1 (young) to If times in interorbital width, equal to or kss than preeorbital depth; mouth rather small, f to | width of head, extending a little beyond vertical of nostril; teeth in 3 (young) to 6 series, 50 to 74 in outer series of upper jaw; 2 series of scales on th
. Catalogue of the fresh-water fishes of Africa in the British museum (Natural history) ... Fishes; Freshwater animals. TILAPIA. 177 3 times. Head 1| to 2 times as long as broad ; snout with straight or convex upper profile, a little broader than long, f to | postocular part of head ; eye 3 (young) to 4^ times in length of head, 1 (young) to If times in interorbital width, equal to or kss than preeorbital depth; mouth rather small, f to | width of head, extending a little beyond vertical of nostril; teeth in 3 (young) to 6 series, 50 to 74 in outer series of upper jaw; 2 series of scales on the cheek, width of scaly part less than diameter of eye. Gill-rakers short, 15 to 18 on lower part of anterior arch. Dorsal XV-XVI 10-12; spines subequal from the sixth, or last longest, f to i length of head; longest soft rays | to | Fig. TUaj>'ia macrocephala. Lagos. |. length of head. Anal III 7-9 ; third spine f length of head. Pectoral 1 to IJ times length of head, extending to vertical of origin of anal or a little beyond. Ventral reaching vent or anal, or not so far. Caudal truncate or feebly emarginate. Caudal peduncle deeper than long. Scales cycloid, 27-30 â ""1^13 ^ ; lateral lines ^0173" Brown above, yellow or white beneath; a black opercular spot; chin and throat or lower half of head often black, or spotted or marbled with black ; dorsal and caudal sometimes with round light spots ; anal grey or black ; ventrals VOL. III. N. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original British Museum (Natural History). Dept. of Zoology; Boulenger, George Albert, 1858-1937. London, Printed by order of the Trustees [by Taylor and Francis]
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