clams, mmm nummy! clams require stability (tank at least a year for best chance) they need very good water quality and parameters must be maintained in correct zones, lighting is crucial for some and an absolute must for others, some clams live in the sand some on rock, pyramid snails are the major pest along with various fish,crabs etc. There are a couple of major disease's like pinched mantle to learn about, buying a clam is simple, researching its care is a valuable asset