Well this guy is about 8 months old and about 13". I feed him Freeze dried Krill, fatheads and night crawlers. He loves creeping through the algae which yes I intentionally let get that way after all it is his home and I like the natural look of it algae or not. He's in there with 6 Buenos Ares tetras, a 9" pleco, decorous cat and some Dats I never see until I feed them at night.