ok so i was talking to a guy at a well known respected online breeder and what he said was that breeding fish that are brothers and sisters isnt good for the strain.. that you can get away with it a few times but that if you do it too much the fish start to lose their color and be garbage. now i know this how most hobbyists sell there fish. he said that you should try to crossbreed if you know they are siblings. try to get some fish of the same species from someone else and trade a few. so my question is this how do we know if the fish that us hobbyists get from whatever source we get them from are brothers and sisters? because if we buy f1 fry or juvies raise them out those are probly brother/sister unless the person who bred them has a ton of them. Then theres those rare tanganyikans or rare haps that are only brought into the states in small numbers and everyone wants to spred them by the offspring of a small group. how will inbreeding affect this line down the road?