What Happens When...

[jjkolodz]

Does anyone know what the outcome of crossing a pure calico BN with a pure albino BN or a pure brown BN will result in. I've crossed a pure albino with a pure brown and got all browns.

[aledk85]

i think can born mix and also in your case or everyone standard color or albino

[jjkolodz]

I'm wondering if the calico trait is dominate over the albino or standard coloration gene. I know it's probably not as simply as strict dominance vs recessive but I'm just wondering.

[aledk85]

i don't have esperience in this but if they have albino gene you have the possibility... but maybe it's so rare to have pure albino species like this....
maybe someone with esperience can help you better than me...

[drpleco]

I've heard that this creates a mix of fry - albino and brown, but no calicos. I have no personal experience to back this up, only the memory of reading someone's post a while back. I wouldn't be surprised to find all brown fry, either. It's probably best to only mix calico x calico, and avoid the whole question, IMO.

[Richard B]

i don't know either but in terms of survival of a species, it would be best to be a brown fish for camouflge purposes so the brown gene would be dominant with all others being recessive surely? Otherwise it's a flawed survival strategy?

[MatsP]

i don't know either but in terms of survival of a species, it would be best to be a brown fish for camouflge purposes so the brown gene would be dominant with all others being recessive surely? Otherwise it's a flawed survival strategy?

Yes. Certainly albino is a recessive gene, and I expect teh calico defect is also a recessive trait. This means that fish produced from such a spawn will likely be all brown, but carry recessive traits of albino and calico, so if you cross the offspring with itself, you should get 25% of each calico and albino, with 50% that are normal brown. This assumes both of these traits are "straight Mendelian" - sometimes genetics is more complex than that, but I have a feeling this isn't one of those cases.

--
Mats

[apistomaster]

Does anyone know what the outcome of crossing a pure calico BN with a pure albino BN or a pure brown BN will result in. I've crossed a pure albino with a pure brown and got all browns.

If brown normal fin BN Ancistrus sp 3 X with albino sp 3 normal fin I get all browns. When these F1 fry are crossed I get 25% albino and 75% normal brown phenotypes. Don't have any experience with calico BN.