The freshwater shrimp we call ghosties(ghost shrimp) are actually a variety of shrimp that lives in fresh, brackish, and salt. They tend to travel better and live longer when kept in fresh water, the variety of saltwater ghosts you get may actually may be the same species, or a close cousin. You may find it so much easier and more successful to keep a simple freshwater tank or container with a sponge filter for "fresh" water ghosties. They will easily live the saltwater long enough to be eaten, on occasion I'll even see one that escaped days later. I feed mine Omega One micro pellets, currently I have 9 fish eating live foods, some of them with me for more than 8 years. "Fresh water" ghosties have been the main part of some of their diet.
The thing about these ambush predators, they may take dead for a while then just stop, and many times after a move there is a reset. But trust me, unless you can get sushi grade fresh seafood to feed him, and get him to take it, he will not live long on a dead only diet. You'll also need to feed the dead shrimp with the shells on and fish with skin like salmon.
Breeding ghosties may not be worth it, but if you wanted a food breeding project, breeding mollies would be a good one. Feeding him an appropriate size molly is highly recommended. When he gets larger, mollies may become his dominant diet. Mollies are the dominant part of my rhino's diet.
Still feeding him dead food that he will take is not a bad idea, Some of my lions and scorps will take a variety of dead foods, I'll will feed them what they will take, and it gets me by sometimes when their live food supply gets interrupted. Some of them will take one piece if they are hungry and get them to take it by surprise. Some will take dead food for a while, then just refuse it all together, then all of sudden eat it again. Currently my fu manchu pretty much has refused all dead for at least a couple of years. My rhino will only take one piece when I trick him into a quick feeding response, then weeks will go by before I can fool him again. he initially ate silversides and shrimp for months, then just stopped. The biggest thing is that you will jsut not be able to supply them with what they need nutritionally long term on a dead only diet.
