Scientific Name
Euthynnus lineatus

Common Name
Black skipjack

Biology
Dorsal spines (total): 10 - 15; Anal soft rays: 11 - 12; Vertebrae: 37. Anterior spines of first dorsal fin much higher than those mid-way, giving the fin a strongly concave outline. Interpelvic process small and bifid. Body naked except for corselet and lateral line. Swim bladder absent. A large rounded protuberances on 31st and 32nd vertebrae. Color is generally iridescent blue with black dorsal markings composed of 3 to 5 horizontal stripes. Also with variable black or dark gray spots above the pelvic fins. Occasionally with extensive longitudinal stripes of light gray on belly; some individuals have few or no belly markings.

Classification

Classified By

Kishinouye, 1920

Class

Ray-finned fishes (Actinopterygii)

Order

Perch-like fish (Perciformes)

Family

Mackerels, tunas, bonitos (Scombridae)

Distribution

Region

Eastern Pacific

Distribution

Eastern Pacific: off San Simeon, California, USA southward to the Galapagos Islands and northern Peru. Two stray specimens collected in the Hawaiian Islands.

Range

39°N - 16°S, 128°W - 77°W

Environment

Climate

Tropical

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

0 m

Depth To - meters

40 m

Zone

pelagic-oceanic

Environment

Marine; pelagic-oceanic; oceanodromous (Ref. 51243); depth range 0 - 40 m (Ref. 5227)

Trophic Level

3.82999992370606 s.e. 0.60 Based on food items.

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

84.0 cm

Common Length

60.0 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

Fisheries: minor commercial; gamefish: yes

Vulnerability

Moderate vulnerability (43 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=2)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated