The Green Phantom Pleco, scientifically known as Hemiancistrus subviridis, is a popular freshwater fish known for its vibrant green coloration and distinctive yellow spots. Originating from the Orinoco and Ventuari Rivers in Colombia and Venezuela, this pleco is a favorite among aquarium enthusiasts due to its unique appearance and algae-eating habits. They are generally peaceful but can be territorial, especially males, and require a varied diet of algae, sinking pellets, and fresh vegetables.