If these environmentalists are right this should work great

not sure how strong this is I think it could hold most bluegills, sunfish or small bass, id scale it up for any thing bigger tho.

I don't have any silk PLA but I bet that would get the fishes attention and clear filament would look the best!

but seriously be considerate, clean up after your selves, and others if need be (I just don't like looking at trash everywhere)