I recently saw some razor clams and golden clams for sale but the shop owner had little knowledge about them. Would they clean the gravel of the tank? And if so would they be OK with SA Cichlids.
If people can live on Taco Bell, clams can live on fish poop. LOLI guess you gotta have some really dirty water or something so they can filter throught it to eat. Might have to add stuff to the water too like for saltwater clams. Cyclopeze or something. Cant imagine they could live off of fish poop alone.