Mysis on the shell? Explain please.I also had one for 2 1/2 years a long time ago. It died while on vacation under a friends watch. Take cherrystone clam on half shell and black worms for sure to start. Mysis on the shell after a couple of days and work in some algae. Don't leave clam in the tank long to foul your water so get a dozen small ones and keep in fridge. Good Luck. They are awesome fish, but a lot of work to get going. BE PATIENT