I have a 610g tank that has been set up for 3+ years I have lost count. Well established. I have 2 Motoro stingrays a few tiger barbs (they where suppose to be feeders the rays never ate them) 4 Angle fish 1 Pleco. We have at toddler who has stated to get into watching the tank. I would like to get some fish that she could enjoy watching from her height she isnt able to see the bottom 1/4 or so of the tank. and also place some decorations but im worried about what would be safe for my rays?

