They can't be jumpin from lake to lake!
THis question is about evolution, I'm thinking
2007-08-09 14:44:50 · 3 answers · asked by seenanasun 1 in Science & Mathematics ➔ Earth Sciences & Geology
Many lakes are connected by rivers. If that is not the solution, then I would hypothesize that the lakes used to be connected long ago, and those species of fish haven't done much evolving in the meantime.
2007-08-09 14:51:55 · answer #1 · answered by lithiumdeuteride 7 · 0⤊ 0⤋
Here's a possibility....fish eggs get stuck on birds' feet...bird flies to another lake...fish eggs fall off...baby fish grow up and reproduce in news lake....this mechanism has been observed to occur.
2007-08-10 02:31:05 · answer #2 · answered by Anonymous · 0⤊ 0⤋
species are also introduced into lakes for fishing that they wouldn't normally be in. usually works but can go wrong.
curses upon invasive species!
2007-08-09 14:54:35 · answer #3 · answered by Anonymous · 0⤊ 0⤋