It'd be like one bite though!
I do agree with trying to get him a larger home. He's not very big right now but obviously he'll grow and could prob use some swimming room. I would look through craigslist. There are a ton of deals for under $100 for thanks that are 30-75g. Have you ID'ed the species yet? If not it maybe worth hunting down a marine biology teacher at a local school or college to see what it is. That way you can plan the setup accordingly. If you've never done sw before you will need to cycle the tank first with lr. Once again craigslist is a great place for this. So that being said if you went out and got a tank today he'd still be in the bucket for a while as the tank cycles. I know you mentioned there is broken asphalt, etc in the ocean near you. It's prob ok for the bucket but I would try to get some rock for the actual tank. This allows for proper bb to accumulate. I'd like to see what happens with the little guy so hop to it and get him/her/it a tank