I have a planted 20G Tall tank with an established population of small tetras, BB gobbies, Honey Dwarf G's, Gold Rams, and a small Discus...a couple Cory cats and a small algae eater. A lot of my long stem narrow leaved plants are being systematically stripped of their leaves by some of the fish. I have a snail (who i don't think is the culprit). I some miniature frogbit (Limnobium ...)covering a portion of the top water and the discus seems to munch on that often, but so far I am not sure who is doing this. Any thoughts? Thanks!