Hey it looks like they were gathered from a beach or something of that nature surprise since it winter. I advise you on bringing them back if they are from the beach or something like that and set up a saltwater tank. Setting it up properly like with a heater (if needed as Im unsure since if they are from the beach then many you don't need a heater), filter and so on. You will have to cycle the aquarium first. We can walk you through the process.... also best to try a hardier clam however with the hardier clams you will be needing to spend more $$$ for special equipment.
Help with clams ( beginner alert ! )
- Thread starter siddhu_r
- Start date
Bake Clams is also an option...lol jk but seriously bringing them back where they were found is not only best for them as well as for you as its will be very difficult to take care of them in such a small container (Water changes eventually will be needed), food as it takes time to culture your own rotifers....list goes on. I freely interested in saltwater you will be guided in a great direction by members here....as I go back to stare at my freshwater tank 
