cleaners

Hey, so I have a 30G paludarium about half of it water, up and running for about three months now. I had a mature bamboo shrimp in there for 2 months but he mysteriously died for reasons I'm not sure. I've a molly, a yoyo loach, a mini-pleco, and a leopard tadpole in there whom all get along...

I recently set a twenty gallon community tank, 1 flame guorami 7 neon tetras 3 white skirt tetras 3 cherry barbs I want something to clean the tank like a snail or catfish or something, but do not know if there is enough room in the tank. I also do not want a snail that can breed and...