Fully Marine GSP tank mates

[ingo_1978]

I know Green Spotted Puffers can be a bit vicious when they're mature but are there any tank mates he could share with when he goes fully marine?

I would love to be able to put some marine fish in there too.

I am willing to upgrade to a larger tank to accomadate

any suggestions?

 

[Navarre]

Probably something that cantake care of itself. Perhaps a trigger?