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Hermit crabs and turbo snails.

Subject: Hermit crabs and turbo snails.
by Tarek on 11/9/2006 21:33:00

Are Hermit crabs and/or turbo snails a desirable addition to a marine tank? Do they need to be added when the aquarium is ready for fish or are they more hardy? I've read that hermit crabs can attack certain types of fish which sleep wedged in rocks. Is this a common problem? Finally does it make any difference if they have red or blue legs?