Genus
Common name: Barreleye
Scientific name: Stygnobrotula
Stygnobrotula is a genus of fish known for its unique barreleye members, which are characterized by their transparent heads and tubular eyes. These deep-sea dwellers are fascinating for their adaptation to low-light environments. While not common in the aquarium trade due to their specialized needs and deep-sea habitat, they are of interest to advanced hobbyists who appreciate the diversity of marine life.