Flashing Scallop are very usual invertebrates.
They move their flesh forwards and backwards rapidly and gives the appearance that there is an electrical current.
Add various coral foods into their aquarium as they are filter feeders, removing food from the water column.
Flashing Scallops grow to roughly three inches in diameter.
Place the Scallop into a crevice because this offers protection and reduces the likelihood of it moving around the aquarium.
Finally ensure there are no predators in the aquarium that could eat the scallop.