I have a 55 gallon aquarium with two penguin 350 filters and a power heard for additional circulation I have 6 skirt tetras 6 black neon tetras and 9 neon tetras 4 emerald Cory's and 5 otos ..I'm looking to add just 2 maybe 3 more fish as a center piece. Does any have any ideas I've done some research I'm thinking about angels or rams does anyone know if this would be okay or have any better suggestions thank you in advance all comments are welcome