I purchased 4 Pigmy Cory Cats because I only have a ten gallon tank. When I was able to find them I purchased them right sweat. I expect they will only grow to 1””-1.5”. What I didn’t expect was how tiny they were when I bought them. I have to put on my glasses to even see them when they’re sitting still. One died in two days but the others seem to be doing well. They show the typical Cory behavior but they also like to swim a little more and hover mid-tank. They don’t really school with only 3. I paid too much but that was the only way to get a very small Cory. They’re a lot of fun to watch