Hello Aafaq,

In many but not all bagrid catfish, the males have a genital papilla (absent in females) which typically enlarges in the breeding season, while in the female the oviduct pore also enlarges. If you can use these characters, try to look for other, more subtle clues. See Bhatt 1971, J. Bombay Natural History Journal 68: 556-572, or Reynolds (1971), A guide to the external sexing of some West African freshwater fishes, Ghana Journal of Science 11: 1-9.

Dear Sir

Thank you very much, I will definitely go through which you have mentioned.

with kind regards 

Aafaq Nazir