SubstrateSource Microsorum Pteropus Large Java Fern Mat Live Aquarium Plant SubstrateSource Freshwater Live Aquarium Plant. Great with Bettas, Angelfish, Gouramis, Tetras, Rasboras, Platies, Corydoras, and other freshwater tropical fish. Easy care! Thrives in most freshwter aquariums Dense Mat Growth - 30+ Leaves. SubstrateSource Microsorum pteropus Java Fern Plant Guide included.