Green marine algae is a super nutritious and tender seaweed supplement that your herbivorous marine and freshwater fish will devour tr his dried seaweed is ideal for feeding tangs surgeonfish moorish idols parrotfish angelfish wrasses damsels and some large butterfly fishr green marine algae is made form 100 natural dried seaweeds marine macroalgae with garlic extract rich in vitamin c and 100 digestibler an entirely botanic and very nutritious supplement for all grazing fish