How long to leave an oyster in the tank?

[untamed]

The more you feed, the more strain you put on the system filtration regardless if it is consumed or not. Uneaten food would be worse than eaten food, but it all has to be processed by the system one way or the other.

I believe that well fed fish are healthy fish. Yes, you can feed less and they may survive...but if they are eating an entire oyster every day, then I would give them one every day. If they can eat two, give them two. I think this is probably especially valuable for a fish like the Copperband.