I have only ever had Bettas and Plecos, but after the recent passing of my Betta fish, I decided I wanted to get a school of fish. I got a used 45g tank off marketplace. When I went to pick it up the guy asked if I Wanted his four fish. The tank was caked in dirt, and the fish were in a small glass of water that had particles of dirt mixed in it. I set up the tank, put my Pleco Chong in there and then added the four other fish I received with the tank. everyone seemed to be happy. One fish is a colored skirt tetra, one a red eye tetra, a zebra Danio and a Neon tetra. Obviously none of them were in a school so I would imagine they were stressed. Not to mention their poor living environment prior to being in my care. The Zebra Danio has a large stomach compared to the other ones I just bought as tank mates. My Betta developed dropsy when we moved across the country, but his scales never flared, so I know from experience that just because the scales aren’t sticking out it doesn’t mean it’s not dropsy. I am attaching photos so anyone who knows about these fish, and what they look like when they’re bloated or carrying eggs vs when they have dropsy can help. Thanks in advance!