Goldfish "parking" under the waterfall?

"Sean R. Kerns" wrote in message ...
Hi all,

Approx. 750 gallon (US) pond with plain old pet store goldfish that have
been in the pond around four years, at least the original generation, and a
waterfall about 1-1/2 feet high that drops into the back of the pond.
I have noticed lately that the goldfish will "queue up" like buses in a
station righ under the waterfall. This only seems to happen in the early
evening, when the direct sun is gone - during the day, they're usually
hiding under the lillies.
They don't seem unhappy, and they frolic, play, spawn, and eat - but they
seem to like to do this "parking" thing. Any idea what this is?

Sean

Maybe you have just one oddball fish with a strange habit. He goes to
the fountain at a certain time and since they are schooling fish, one
more follows him over and then boom they are all there. Next thing you
know it becomes a habit. I have netting up on my pond now because a
heron was visiting in mid-day when full sun was hitting the pond. Even
now the fish go to the bottom around 1 p.m.