Cool vid. Never had a salt tank, but have had many critters in freshwater. Aside from various fish, we had Newts, Salamanders, various "shrimps" and crabs. I've also enjoyed some snakes and minor lizards in my youth. Skinks being the most common, although my brother had a couple of geckos, a pair of anoles, and we shared a short-lived iguana. In hindsight, that wasn't such a good pet for a couple of kids. Hermit crabs too. Interesting little buggers.