Nutcracker prickleback (Bryozoichthys lysimus)

Scientific name: Bryozoichthys lysimus Jordan & Snyder, 1902

The Nutcracker prickleback (Bryozoichthys lysimus) is a marine fish of the family Stichaeidae. In the aquarium it needs water at 1–4°C (34–39°F). Native range: North Pacific, northern Hokkaido, Japan to the northern Sea of Japan, the Okhotsk and Bering seas, to Gulf of Alaska. Reported from South Korea.

Nutcracker prickleback care at a glance

Temperature
1–4°C (34–39°F)

Biology

Dorsal spines (total): 61 - 66; Dorsal soft rays (total): 0; Anal spines: 1; Anal soft rays: 47 - 50. Dorsal side of head with numerous dermal cirri; scales on body not extending forward beyond origin of dorsal fin; anterior chin with a pair of small cirri.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Bryozoichthys lysimus
Family
Stichaeidae (Pricklebacks)
Order
Perciformes (Perch-like fish)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
27.0
Common length
22.3
Depth range
45–490 m (148–1608 ft)
Environment
Marine; demersal; depth range 45 - 490 m, usually 100 - 200 m
Climate
Boreal
Distribution
North Pacific: northern Hokkaido, Japan to the northern Sea of Japan, the Okhotsk and Bering seas, to Gulf of Alaska. Reported from South Korea.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Uses
Fisheries:
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Sources

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

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