Originally Posted by teen
try him on the bottom. if you notice he starts loosing color or just looks generally unhealthy, i guess try moving him up. derasa clams are sand dwelling clams, so im guessing they wont be happy in the rockwork. but then again, ive never owned a derasa.
i dont know how this ever got started. Derasa clams are most commonly found up on the reef. ive read population studies and they all indicate that they are found on the reef amongst acropora corals. SOME can be found at the base of the reef and they are thought to have fallen from current or wave action.
a 72g tank is kinda tall, it mat be fine on the bottom but will probably do better higher in the tank