Egg Characteristics of Colossoma macropomum
 
Main Ref. De Albuquerque, M.O., J.W.B. Siva and G. Kuvacs, 1994
Place of Development
Shape of Egg spherical
Attributes smooth
Color of Eggs
Color of Oil Globule
Additional Characters Semen production of 2 ml/kg live weight was recorded with 6 to 10 million sperm per cubic cm. Unhydrated eggs weighed 0.58 mg, diameter 0.9-1.0 mm, vitelline diameter 0.8-0.9 mm. Hydration took 30-40 minutes. Two-blastomere stage was reached 23 minutes after fertilization, four-blastomere after 30 minutes, eight-blastomere after 42 minutes, morula phase after 1 hour and 22 minutes, pre-embryo after 4 hours and 23 minutes, embryo after 7 hours and 37 minutes. Embryo begins moving after 11 hours and 55 minutes.
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( e.g. cephalopods )
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