Id this wood...Fish safe?

[peewee]

fruit bearing trees mostly have some sort of toxin.

 

[Noto]

It has opposite branching, and also appears to have longitudial lenticels (the pore-like structures in the bark) which narrows the possibilities way down. Shipoffools' Japanese maple guess is a good one. Still, I'd stay away from it. It may have been treated with preservatives and who knows what else.