sean mckinney wrote:
Not insulted, always ready to be corrected with factual material, the
detritus thing is some thing I seem to remember from a book, hence
"believe"


Since I posted the above link I read that there are quite a few leech
species that are "scavengers". That sort of leech, IMHO, would be a
cool thing to have in an aquarium.

http://dnr.wi.gov/org/caer/ce/eek/cr...tter/leech.htm

"Other leeches eat a more "civilized" diet of dead plants and animal
matter."

I read that blood sucking leeches (of fish or other creatures) would be
attracted by splashing. I spent some time splashing in the river Soar
with a stick, but the leeches seemed to take no notice whatsoever. And
the river Soar has huge numbers of leeches.