Hi, I have a 10 gal cubic tank (37.5cm length; 24.5cm width; 38cm height), and I wank to make some changes, one of them is replacing some of the fish. I have: 2 orange Platys 1 Guppy 1 Glass Catfish 5 Zebra Danios 1 Neon Tetra, 1 Cardinal Tetra I know, tank is a bit overstocked, zebras need more swimming space due to tank size, a tall plastic plant and a floating Anubias. Also the tetras are scattered since they have no schoolmates. Glass Catfish also requires a larger tank and more mates. I know the facts, but I want to change that by replacing them with some more interesting fish. I want something beyond easy care, I'm getting bored and want to turn the hobby into an activity. Currently I'm in love with my orange Platys. They're calm swimmers and I love their deep colors, unlike Zebra Danios or Neon Tetras having multiple and some transparent colors. My Guppy is a cute one, exploring around the aquarium with its little mohawk, so I'm keeping him. What do you recommend? I was thinking about a snail, or a very small schooling fish (smaller than Neon Tetra, if such a fish exists), maybe another sort of solitary small-medium sized fish such as the Platy... I want to make my aquarium hobby less idle and more active. Thanks for the help!