I have been an aquarist for over 10 years I have been researching motoro stingrays for a number of years and I finally mustard up the courage to buy one knowing that they are demanding. My water quality is excellent using r/o water levels perfect plenty of room in the 175 gal. Pancake (male motoro stingray) hasn't eaten anything since I bought him 3 days ago. I have tried worms whole, halfed, and cut up very small rejected. Rosy minnows (pet store said this is what he was eating) nothing. Blood worms, and whole thawed krill. I have been stressing day and night about it. He seems fine swimming freely with the lights off I've been trying to keep the lights off during the day for him to get comfortable. Need to know if this behavior is normal I also need to know signs of stress so I can keep an eye out. Thanks.