Could Someone Please Answer?

[fish48]

there are so many myths about inbreeding
inbreed fish can be breed for for many years with out new blood introduced all of my Livebearers are kept and breed this way it is very rare thet i get
sick or deformed fish i have guppy's inbreed for 20 years and many other types of Livebearers
ranging up to 15 years. i have been breeding Livebearers for more then 30 years with out new blood introduced to any of them . when or if i get a deformed fry/ its discard it's not wanted.

 

[OldMan47]

HelterSkelter, that is no way to talk about my fish. I really love my wilds.

You are right though. Inbreeding is the way that all fancy aquarium fish are developed. In order to avoid damage, selection is made based on not only color patterns and shapes but fish health. If you don't include fish health in the equation, inbreeding can cause very negative results. If you cull regularly based on health and vigor, the genetics of the remaining fish improve constantly.

Dude, forget your prejudices. Inbred fish are all that you will ever find at your local fish shop. Nobody at the fish farm goes out and removes all females in a 10 acre pond so that they can introduce a few thousand new females to avoid inbreeding. They remove adults from ponds with well established lineages to sell and leave everything else behind to grow bigger and breed. At that point the fish are all inbred. If they find something wrong, they remove, cull, the individuals that are not up to standards. If it is carried out properly, you will have stronger and more vigorous fish than you find in the wild. If done poorly, you will indeed have too many defectives.

 

[Tolak]

The lower the life form, the less of an effect inbreeding has. All the nitrifying bacteria in your bio filter are inbred, and do quite well. With fish, or bacteria there is no comparison to the complexity of a human, which I think you are trying to compare this to. The difference in complexity is like comparing your lawn mower to a Lear jet.