Scientific Name
Ernogrammus hexagrammus

Common Name
Six-lined prickleback

Biology
Inhabit coastal, near rocky reefs among algae and rocks; also brackish waters (Ref. 51666). This nocturnal fish hide between stones during the day and move to sandy areas in the evening for foraging. Feeds mainly on polychaetes and mysids, decapod crustaceans, fishes, algae and sipunculans. A solitary species with low level of contacts and aggression. Potential predators include Squalus acanthias, Sebastes taczanowskii, and S. trivittatus, sea scorpions Myoxocephalus, and cormorants (Ref. 86742). Oviparous, eggs are guarded by the male (Ref. 58332).

Classification

Classified By

Schlegel, 1845

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Pricklebacks (Stichaeidae)

Distribution

Region

Northwest Pacific

Distribution

Northwest Pacific: Japan to the Gulf of Po-Hai (Gulf of Chihli), the Sea of Japan, and the southern Kuril Islands.

Range

Unknown

Environment

Climate

Temperate

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

142 m

Zone

demersal

Environment

Marine; demersal; depth range 0 - 142 m (Ref. 50610)

Trophic Level

3.39 s.e. 0.51 Based on size and trophs of closest relatives

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

15.0 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 0.6250 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Moderate vulnerability (37 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated