The two forms of stickleback co-occur in the transition areas between the lake and stream, especially during the breeding season. |
Make a big deal of the last stickleback. This game simulates the situation at Hadley Lake situation where the stickleback are made extinct. |
Sixty years ago the great ethologist Niko Tinbergen noticed a stickleback fish aggressively displaying toward the window of his fish tank. |
As we walk to the edge of a stream, a stickleback freezes, then darts away in a series of rapid zig-zags punctuated by brief pauses. |
Nine thousand young stickleback, roach, dace, chub and eels died along an 11 km stretch of the beck. |
Small flatties also proved entertaining, and when a small reef was found, I noted a 15-spined stickleback in some weed. |