I bought some whitbrook tilapia last year to breed with my blue tilapia to make a lighter color hybrid than the niles i had before. What happens is i get a few that are white and many that look very similar to my blues. I breed these whitebrook with my blues and get an aprox 50 npercent male female ratio. How can this be, my other niles made almost all males as far as ican tell. Are these whitebrook tilapia purebread niles or some kind of hybrid turned into its own line. Id like a discussion here as my findings are confusing. In no way am i implying anything im no expert.
Whitebrook tilapia Makeup?
- Thread starter vtecmissle
- Start date
Does anyone else know why a purebreed nile and a purebreed blue would produce roughly half female fish
I am going to make an uneducated assumption here from just an observation. The blue tilapia are from the aurea strain and from the pictures I have looked at the whites display some faint markings of the blue line .. I am going to take a guess that the whites are 1/4 blue and 3/4 nile . You might try asking White brook farm . I'm sure they know. ( I might be wrong but, I thought I would give it a guess.)
The only way to make the light blue fish you want is if the blue and the white tilapia both have dominant color genes thus creating an incomplete dominance. Male to female ratio is specific to each species, you have to research that.