Want To Breed Albino Varieties.

[VidVid]

hey.
i want to breed albino kribensis. I heard albino female kribs prefer normal male kribs and vice versa. So will crossing a female albino fish (kribs in particular) with a male normal fish (kribs in particular) produce albino fry???
Thanks for any replies.

 

[VidVid]

i think i got the answer to my question but correct me if im wrong.
There is a possibility if the male had at least 1 albino gene. if not, then that means he is pure dominant (represented by DD). The albino female is pure recessive (represented by dd). Crossing the two will give a first generation of normal fry but with an albino trait (Dd). Crossing the first generation will give you a second generation with 50%albino and 50%normal.
lol...i just needed to think a bit.
The only problem is i dont think inbreeding the first generation is a good idea though???

 

[OohFeeshy]

Not so. Kribs seem to be an exception.

An exception in which albinism is not due to a recessive gene occurs in the common Krib. Langhammer reported that albinism in this fish is die to an incomplete dominant. He stated that heterozygous fry have melanophores in the upper half orbit of each eye, why homozygotes lack melanophores at any age.He also noted dark spots in some fins of heterozygous adults.

.....

The homozygotes grow more slowly than wild-type or heterozygotes.

....

Adult heterozygotes have some melanophores on the body, resulting in a faint grey pattern on a nearly white fish.

From Aquariology's Fish Breeding and Genetics.

So what that's saying is that you won't get proper albinos, but they'll be near enough. Then if you wanted pure albinos you'd have to pair up the fry from that and then sort out the normal, heterozygotes and proper albinos.

 

[VidVid]

ok thanks.
so breeding fish from the same batch isnt bad?

 

[loachman]

Generally, it's not really bad. It will increase the risk of genetic diseases and other problems, but it's not huge.

You don't want to do it for generations though, as you'll get less viable offspring over time.

Breeders seem to cross fish from the same batch for a generation or two or three, then cross in a wild type (or fish from another genetic population) to keep up healthy offspring.

A real breeder may be able to give some more information. This is just some info I've seen on guppy breeding.