Language English Tropical Rainforest Photo: Biodôme Photo: Biodôme Photo: Biodôme Photo: Biodôme OngletsDescriptionDistinguishing features The royal panaque has light yellow horizontal bands on its body that may be in a range of shapes, long or short, wide or narrow, broken, etc. In some species, the male has long spines on its opercula that it uses to fend off other males when defending its territory. Reproduction These fish are oviparous. Diet They mostly eat plants. Predators Their enemies are birds and other fish. Humans also damage the species by discharging toxic waste into waterways (mining and forestry industries) and by catching them for sale to aquarists. Habitat They live in the upper reaches of the Amazon. Ecology, behaviour These fish are very active at night. In an aquarium, they may cause behavioural problems in other fish, by preventing them from getting sufficient rest. Most royal panaque spend the day hidden in crevices in rocks and old stumps. These armoured fish have a sucking mouth and sharp, comb-like teeth that they use to scrape the algae from rocks. French namePanaque royal Scientific namePanaque nigrolineatusPhylumChordataClassOsteichthyes (bony fish)OrderSiluriformesFamilyLoricariidaeSizeLength: 30 to 38 cmStatusCommon species, commercially exploited for sale to aquarists.