I recently purchased a henlei pup for somebody. He practically gave it to me because he couldn't get it to eat shrimp. I have had it for 3 day. I am currently dosing with 2 1/2 cups of salt for a 75 gallon tank, and prazi pro. I have tried feeding it night crawlers, frozen blood worms, live tubiflex worms even feeders, and it still refuses to eat. Is there anything else I can do or try? Please help. I have owned 12 rays and never lost one. I don't want to start now.