Ocellatus Borneo Sucker is a species of hillstream loach from the Gastromyzon genus, often called the Redfin Borneo Sucker due to its red fins, and is known for being a peaceful, social fish that thrives in groups within fast-flowing, clean, and well-oxygenated water with a biofilm-rich substrate. These specialized fish, which include Gastromyzon ocellatus, are found in the hill regions of Borneo and require a specialized aquarium environment with strong water flow to mimic their natural habitat.