i was feeding my tank marine cusine ( sp? ) and i think the clam might have got a piece stuck in side him because he shot water out the gaped for about 2 minutes. He stopped but his mantle isnt as big as before. my actinicts came one right before he was done gaping so mabey this has something to do with mantle lenght. can he die from my fish food ( keep in mind i didnt try to feed him i was feeding the fish on the opposite side of the tank) thanx a bunch in advance