It just does not seem like rays do well in small tanks. Even if it's temporary. Sounds like it's a newer ray and you have a million fish in your tank. I would think your putting a good amount of stress on it with all the other fish. it's by far your most expensive fish if it was me I would have it in the 300 divided off and put some of the other fish in the 55 but overall it seems like it's time to decide what you want in your tank. And I hate being like so many others but honestly with all that stock in your 300 what are your nitrates? Nitrites? And Ammonia levels?
Sent from the Monster Fish Keeping App
Sent from the Monster Fish Keeping App