We are giving our son a biocube for his 8th birthday. I wanted to have a few stocking ideas ready to help direct him "choose" what goes in it. I am new to this nano tank. Our display is 265 gallons, so maybe something that wouldn't be appropriate in that size? Perhaps something colorful that gets too territorial ( but won't go after him cleaning), seahorse, jawfish, gobie shrimp pair, maybe some alternatives to fish.....Ideas?