Smallscale Waryfish

Interesting Info

• The Smallscale Waryfish is a deep-sea predator found in southern oceans, including the waters off southern Australia and New Zealand.
• It belongs to the waryfish family Notosudidae, a group of sleek, fast fishes built for life in the open ocean.
• Its body is slim, silvery, and covered with very small scales—hence the name “smallscale.”
• It has large eyes and a pointed snout, helping it spot prey in the dim twilight zone of the deep sea.
• The species lives in the mesopelagic to bathypelagic zones, typically from 200–1,000 m (650–3,300 ft) deep.
• Smallscale Waryfish feed on smaller fishes, squids, and crustaceans, making them mid-level predators in deep-sea food webs.
• They are active hunters that rely on speed and sharp teeth rather than ambush to catch prey.
• Like many deep-sea fishes, they may migrate vertically—coming closer to the surface at night to feed and retreating to deeper waters during the day.
• Their silvery bodies act like mirrors, reflecting dim light and making them harder for predators to see.
• The lifespan is not well known, but other waryfish are thought to live 5–10 years.
• Predators include larger deep-sea fishes, sharks, and squid, which feed on waryfish during their nightly migrations.
• They are sometimes caught in research trawls but are rarely seen by humans outside scientific study.
• The species is named after New Zealand ichthyologist John Hamilton, who contributed greatly to fish research in the region.
• Smallscale Waryfish are important ecologically, linking smaller deep-sea prey like krill and squid to bigger predators like tuna and sharks.