The other large fish looks like a tinfoil barb (either Barbonymus schwanenfeldii or Barbonymus altus) which is bad news for any plants you want. Barbs are notorious plant destroyers. If you want that green look, try adding some tall fake plants. Petsmart has some rather nice fake plants. I have the Marineland Jumbo Bamboo and Marineland A-size multipack in my 55 gallon, and they both look very natural.