Tag: use of colored dyes

Hand sexing of tilapia fingerlings using colored dyes in Benin

Photo credit: Ismael Radwan (Egypt) Description: Abdel Rahman El Gamal Tilapia fingerlings when reaching a weight of about 15-20 grams can be sexed by looking at the genital papilla which is located behind the anus. The genital papilla has a single opening in males (for urine and milt) while females have two openings; one for …

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