Join Date: Jun 2010
Location: Northern Virginia
If you're planning on starting a line, you will have to outcross eventually since all you're going to be doing is passing the same genes back and forth if you keep working with such closely related fish. If you're just starting out, though, it's perfectly acceptable and a common practice to breed siblings. The traits in both the male and female are the most likely to breed true with this arrangement, so if you like them a lot as individuals, you will potentially be getting a lot more "hims" and "hers." If you want to continue with this line of fish, though, you should be looking for other unrelated individuals to complement your line in the future.