Ratios in albino fish (cory basically)

[kevin007]

i mean how "rare" is it for a normal fish to give birth to a albino fish? i mean i want a albino sterbai cory but i cannot find them, too rare..so how about me breeding them?!!

 

[Ed4567]

I may well be corrected, but I think that gene for albinoism (is that a word) is recessive, therefore an individual must inherit it from both parents to show the phenotype. The chance of any particular fish being albino depends on the chance of the mutationation occuring naturally, and on whether the parents are carriers of the gene.
To answer you question if you just bought two random normal fish I would have thought the chance of an albino baby being produced would be quite low.

 

[fishdudein]

I'm not sure on any exact percentage number, but you would need to be breeding a "hugely massive" amount of sterbais, even then you would not be guaranteed an albino. Ed4567 is right, albinism is recessive, so to guarantee future generations, you would need to have at least 2 albinos thrown from your regular sterbais, pushing the odds even higher, and they would need to be 1 male and 1 female, pushing the odds yet still higher. On top of that, it seems like I read that sterbais are one of the more difficult corys to breed.

 

[SirMinion]

And that's assuming that the albinism is only controlled by one pair of genes. If it's more, then the chances are even rarer!

 

[guppymonkey]

Is albinism caused by the same genes in all fish? Or does it vary for each species? Although albinos are rare (obviously) they can't be all that rare because it is rather easy to get albinos of some species like aenaus corys, oscars and kribensis. Its probably just really hard to find albino sterbai corys because they aren't sold in every single pet store in the world like albino aeneus corys are. Breeding your own albinos would take a huge amount of time (I know, I have been trying to go from tequila sunrise guppies to albinos and I haven't had any success).

 

[SirMinion]

Once you have a breeding pair of albinos, you will get 100% albino babies every time (assuming albinism is only a single pair of genes) which is why certain albinos are common in the hobby.

The tricky part is finding the initial naturally occuring albinos which which to start breeding.

Naturally occuring albinos are very very very rare.