Recap
Riddle: common name &
genus.
Clue: none.
Is it a fish? No.
Is it a coral? No.
Does it photosynthesize? No.
Does it have a foot? No.
Does it filter feed? No.
Does it have an exoskeleton? No.
Is it a snail? No.
Is it a type of clam? No.
Is it a type of scallop? No.
Is it a bivalve of some sort? No.
Does it have stinging cells? No.
(hints)
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Is it sessile? Not always.
Is it free floating? Not always.
Is it commonly found in most tanks?
Yes, but not always.
Is it commonly a hitch hiker? Yes.
Does it grow its own shell? Yes.
Does its shell have two parts?
Only when broken.
Can you buy it in an LFS?. Not intentionally.
Is it sometimes used as a food source? Never.
Clue: You should all know what this is.