variety

I have a 55 gallon freshwater tank with: 7 tiger barbs 6 neon tetras 5 white skirt tetras 4 albino Cory cats 1 Rainbow Shark I was wondering what other fish I could add to the tank. I’m open to any suggestions.

I have a 55 gallon tank with guppies, blood eyed tetras, danios, 2 yo-yo loaches, a school of neons, and one red wag platy. I want to add one pleco and some ottos. The last addition I want to add is ether a clown loach, or some snails. I was wondering if I could add both so what type of snails...