Bro's & Sisters?

[armac]

U might get deformed babies.. due to inbreeding...

no you don't, try to know the answer when replying

you can inbreed 3 or 4 times before you start having problems, it is called line breeding.

 

[Enoid]

Dunno about fish, But in our rat-room we have line breed mice and rats for YEARS with minimal issues. Every so often we get one or two born without a toe or two, or hairless, but nothing serious. As long as its only the offspring, not parent to offspring.