Wouldn't you have to add an item (like CookedEMFSTilapia) for the cooked fish that has that model then use ReplaceOnCooked = CookedEMFSTilapia in the fresh fish item ?

On the Rotten one wouldn't you have to add an item (like RottenEMFSTilapia) for the rotten fish using the rotten model then use ReplaceOnRotten = RottenEMFSTilapia in the fresh fish item ?

I'm not sure but I think that's how that works.