File:Oreochromis with morphometric landmarks.jpg

English: Description of the landmarks. 1 tip of snout at fold anterior to ethmoid/nasal bones, with mouth closed 2 anterior base of dorsal fin 3 base of the caudal fin at the level of the lateral line 4 anterior base of the anal fin 5 center of the eye 6 bottom of the eye 7 top of the eye 8 edge of the head directly above the center of the eye 9 posterior end of the dorsal fin base 10 base of the caudal fin, dorsal 11 base of the caudal fin, ventral 12 posterior end of the anal fin base 13 anterior end of the anal fin base 14 most posterior edge of operculum 15 corner of the mouth, where maxillary angle rests when the mouth is closed