10 Gallon

I've never caught a Goby. Hermit crabs are easy cause they are on the flats in like 1ft of water so just grab one and if you don't like it toss em back.

Most dive shops have slurp guns which make catching fish a lot easier. I'm pretty sure Florida Freedivers near Northlake have them, great store.

The white legged hermits are known to eat corals and such, not reef safe. I caught one of mine trying to eat a snail so I took him out and threw him out into the inlet.

 

My tank inhabitants for my nano are two false percula clowns, one turbo snail and one large hermit crab. The snail and bio load keep the sand, glass, and 10lbs of rock pretty clean. Actually, incredibly clean. I don't feed the perculas more than twice a week, so they nibble on the rock as well.