freshwater fish stocking in 46 gallons tank
gouramis (blue, flame, honey), rainbows, hachet fish, angels, botias, tetras (cardinals, gold, red, neon, flame), plecos (L-114, L-108, Rhino), zebras, platy's, clown loaches, featherfin cats, cory cats.
Oscars are a type of cichlid and they are a very amusing species of freshwater fish to keep in the home aquarium.
Having adequate filtration is the key to maintaining a healthy freshwater aquarium.
If your fish is suffering, you may want to consider euthanasia as an option to humanely end his pain.