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Identification of sex of brooders
Identification of sex of brooders
● Identify the sexes by observing the external morphological characters like genital aperture, shape of abdomen, colouration of fins, size of fish, etc.
● The keys used for the identification of sex of brooders are as follows:
S.NO |
FEMALE |
MALE |
1 |
Larger in size, slightly smaller pectoral fin |
Smaller in size, slightly larger pectoral fin |
2 |
a few ova discharged on applying pressure on abdomen |
milt oozes out on applying pressure on abdomen |
3 |
Pectoral fin brighter, body stouter |
Pectoral fin duller, body linear |
Water quality
● Monitor water quality parameters such as temperature, dissolved oxygen, pH, CO2, alkalinity, hardness and ammonia at fortnightly intervals.
Last modified: Friday, 6 August 2010, 12:53 PM