F1 and F2 Classification?

[sneekerp]

I see different fish described as F1 or F2, what does this actually mean? Is one more desireable than the other? Thanks in advance.

[darkangel]

F-1 means the parents are wild, F-2 is second generation.

[fairdeal]

Actually F1 or more correctly G1 means 1st generation from wild caught and F2 or G2 means 2nd generation from wild caught. From the 3rd generation from wild caught and beyond the reference is normally to tank raised or domestic.

If a wild caught is bred with an F1 the offspring will be F2 and an F1 with an F2 the resulting fry are domestic or tank raised. Hence the interest with serious breeders to keep within the wild caught to F2 generations so the lines can be traced. The genetics are still strong in this range and generally tend to weaken as you get further away from it.

[sneekerp]

Actually F1 or more correctly G1 means 1st generation from wild caught and F2 or G2 means 2nd generation from wild caught. From the 3rd generation from wild caught and beyond the reference is normally to tank raised or domestic.

If a wild caught is bred with an F1 the offspring will be F2 and an F1 with an F2 the resulting fry are domestic or tank raised. Hence the interest with serious breeders to keep within the wild caught to F2 generations so the lines can be traced. The genetics are still strong in this range and generally tend to weaken as you get further away from it.

Thanks very much for the clarification!