EFFECT OF ADDITIONAL DRAGON FRUIT (Hyloceraus polyrhizus) EXTRACT ON ARTIFICIAL FEED ON THE BRIGHTNESS OF BETT FISH (Betta sp.). jfn [Internet]. 2021 Dec. 31 [cited 2025 Oct. 3];1(2):81-92. Available from: https://journal.unram.ac.id/index.php/jfn/article/view/474