In the gulf of mexico in the pan handle you can literaly gather up
handfulls of ceriths......LFS here get $3.98 each for them.....I often
bring back a bunch every time we collect water or go to the coast. YOu
read that critters as such collected in cooler waters never last long
in a reef type tank, however the pan handle of thre Gulf of Mexico is
not tropical by any degree of the imagination and I have never had a
problem with snails, or hermits or even some of the tiny damsels and
other critters lasting in a reef tank at temps of the 81-83 degree
range.....

My biggest issue with ceriths is that the typical hermits I keep loves
to kill em for new houses, even though I may have a bunch of suitable
shells in the tank,m they seem to prefer a fresh new house over a
discarded shell.......


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I forgot more about ponds and koi than I'll ever know!