Amazon Jungle plants are non-toxic and safe for all fish an amphibians. They are great for providing important cover and hiding places for fish. Create a natural looking display by using multiple plants, place taller plants at the back for maximum effect.- Create a natural looking display by using multipleplants, place taller plants at the back of the aquarium for maximum effect- No trimming needed! But be sure to scrub with a soft brush when you see surface build-up