On: Hunter-gatherers introduced fish to a mountain lake 7000 years ago

[soperj]

I would think that would lead to a lot of inbred fish

[vitally3643 → soperj]

This tends to simply not be that much of a problem for "lower" species.

[prerok → soperj]

If it happened just once, yes.

[lazystar → soperj]

a high rate of mutations would be an advantage in a new environment, though.