Pointy-nosed blue chimaera (Hydrolagus trolli)

Scientific name: Hydrolagus trolli Didier & S?ret, 2002

The Pointy-nosed blue chimaera (Hydrolagus trolli) is a marine fish of the family Chimaeridae. Native range: Western Pacific, New Caledonia and New Zealand.

Biology

Body blue-gray with a dark line around the orbit and dark shadowing along edges of lateral-line canals. Snout pointed. Preopercular and oral lateral-line canals sharing a common branch. D1 concave with pale margin. Males with frontal tenaculum deeply curved, upturned distally with spines along dorsal upturned edge. Prepelvic tenacula deeply indented along distal margin. Pelvic claspers with pale fleshy distal lobes, divided distally for 1/3 their length, tips usually extending beyond distal edge of pelvic fins. Ventral caudal fin not deeply indented at its origin to form a separate anal fin.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Hydrolagus trolli
Family
Chimaeridae (Shortnose chimaeras or ratfishes)
Order
Chimaeriformes (Chimaeras)
Class
Holocephali (Chimaeras)
Maximum length
112
Depth range
612–1707 m (2008–5600 ft)
Environment
Marine; bathydemersal; depth range 612 - 1707 m
Climate
Deep-water
Distribution
Western Pacific: New Caledonia and New Zealand.
Conservation status (IUCN)
Data deficient (DD)
Threat to humans
Harmless
Resilience
Low, minimum population doubling time 4.5 - 14 years (Assuming Fec

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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