silver dory, flat and quick to vanish

Size
Length: 30–45 cm, Weight: 0.5–1 kg
Lifespan
10–15 years
Diet
Feeds on small fish, squid and crustaceans. Hovers in mid-water using deep, compressed body. Uses large eyes to detect prey in low light. Feeds near seafloor at night. Swims with slow, hovering motion.
Habitat
Inhabits deep continental slopes and seamounts between 100 and 400 metres depth. Prefers sandy and muddy bottoms near rocky outcrops. Often found in aggregations near submarine canyons and underwater ridges.
Range
Found in temperate waters around New Zealand from Northland to Campbell Plateau. Most common on Chatham Rise and off east coast of South Island. Also found in southern Australia region.
Endemism
Endemic
Main Threats
Bycatch in deep-sea trawl and longline fisheries. Habitat damage from bottom trawling on seamounts. No targeted commercial fishery in New Zealand. Climate change affects deep-sea ecosystems and prey distribution.
Population
Population trends poorly understood due to deep-water habitat. Caught as bycatch in hoki and oreo fisheries. Quota management limits total bycatch. Better species-specific data needed for accurate stock assessments.
Conservation Status
Not Threatened
Intensely reflective, mirror-like silver body. The silver dory looks like a fish made of polished metal. It has a deep compressed shape that makes it almost two-dimensional when facing a predator head-on. The pinkish hue of its fins gives it an alternative name: pink-finned dory. A fish that reflects everything and reveals nothing. The surface is a shield. It hides the creature within. It is a close relative of the lookdown dory. They share the same distinctive shape and the large, dark spot on the side. The silver dory is found only in New Zealand and southern Australian waters. It is an endemic of the temperate deep. A fish that belongs here and nowhere else. This restriction defines its existence. It does not wander far. Hovering happens in mid-water between 100 and 400 metres down. Large eyes detect prey in low light. Feeding occurs near the seafloor at night. Small fish, squid and crustaceans are the target. The motion is slow. The hunter is patient. It waits in the dim water. Energy conservation is critical in the cold depths. Movement is minimal. Success depends on timing, not speed. Population trends are poorly understood. That phrase appears again. It is a refrain for deep-sea species. The silver dory is caught as bycatch in deep-sea trawl and longline fisheries. These operations target hoki and oreo. No one targets the silver dory specifically. It just shows up in the nets. The catch is incidental. The impact is uncertain. Better species-specific data is needed for accurate stock assessments. That is the other refrain. It means no one has studied this fish properly. The depth protects it from casual observation. But not from industrial fishing gear. The nets do not discriminate. They take what they find. The silver dory is often what they find. The Māori name is not recorded. It lives too deep for traditional fishing. The people who came before never saw it. It is a modern discovery. A mirror-like fish. A creature that reflects the light that never reaches it. The darkness holds its secrets. The nets reveal them briefly. Then the fish is gone. Sold or discarded. Depending on the market. Which is usually indifferent. That is the silver dory. A mirror-like fish with pink fins. Found only in these waters. Caught by accident. Poorly understood. A reflection in the deep. Visible only when the nets come up. It carries on in the dark. Unseen. Unstudied. Unvalued. Until it is caught.