Egg Characteristics of Oreochromis niloticus
 
Main Ref. Philippart, J.-C. and J.-C. Ruwet, 1982
Place of Development in mouth (mouthbrooders)
Shape of Egg ovoid
Attributes smooth, not sticky
Color of Eggs yellow, orange, amber
Color of Oil Globule
Additional Characters Eggs are like hen's eggs, pear shaped and yellowish brown in color. The size of ripe eggs varies individually, without relation to the weight of the whole ovary. The major axis in eggs range from 1.2 to 1.5 times the length of the minor axis. Mean egg size for Cross River, Nigeria (Jan 2006-Dec 2006): Upper reach, 1.1 +/- 0.07; middle reach, 3.7 +/- 0.87; lower reach, 3.2 +/- 0.56 (Ref. 85170).
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( e.g. cephalopods )
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