L239 Blue Black Panaque, also known as the Blue Panaque, is a species of catfish native to the Orinoco River basin in South America. They have a unique appearance with a blue-black body and white spots on their head, fins, and tail.

These catfish require a pH level between 6.5-7.5 and a temperature range of 76-84°F (24-29°C) in their aquarium. They are omnivorous and require a balanced diet of both plant and meat-based foods. L239 Blue Black Panaques are known for their ability to help control algae growth in aquariums, making them a popular choice for hobbyists.