Here is the Dragon’s Tongue Red Macroalgae that has been growing in one of our planted saltwater reef aquariums for a few years now. What a magnificent piece of living art to have in a saltwater aquarium! Corals and fish aren’t the only beautiful specimens to have in a saltwater tank. There are many beautiful macroalgae species that you can grow in a saltwater aquarium as well, and this particular kind of algae is one of the nicest to own in the industry.