Decapterus maruadsi
(Temminck & Schlegel, 1843)
Japanese scad

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Classification / Names

Teleostei (teleosts) > Carangiformes (Jacks) > Carangidae (Jacks and pompanos) > Caranginae
Etymology: Decapterus: Greek, deka = ten + Greek, pteron = wing, fin (Ref. 45335).
More on authors: Temminck & Schlegel.

Environment / milieu / depth range / climate zone / distribution range

Marine; reef-associated; depth range usually 0 - 20 m (Ref. 54424); tropical; 39°N - 26°S91°E - 174°W (Ref. 54424).

Distribution

Indo-West Pacific: South China Sea to the Mariana Islands. Reported occurrence in southern Africa could not be confirmed (Ref. 3197).

Maps

Decapterus maruadsi / Native range
AquaMaps Data sources: GBIF OBIS
This map was computer-generated and has not yet been reviewed.

Decapterus maruadsi / Suitable habitat
AquaMaps Data sources: GBIF OBIS
This map was computer-generated and has not yet been reviewed.

Decapterus maruadsi / Point map
AquaMaps Data sources: GBIF OBIS
This map was computer-generated and has not yet been reviewed.

Decapterus maruadsi / Year 2050
AquaMaps Data sources: GBIF OBIS
This map was computer-generated and has not yet been reviewed.

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Length at first maturity / Size / Weight / Age

Maturity: Lm 12.5, range 10 - 15 cm
Max length: 30.0 cm FL male/unsexed (Ref. 108763).

Short description

Dorsal spines (total): 9; Dorsal soft rays (total): 30 - 36; Anal spines: 3; Anal soft rays: 25 - 30.

Biology

Adults are found in the sublittoral zone and may enter semi-enclosed sea areas (Ref. 11230). In Guam, it is encountered in large numbers around fish aggregating devices, buoys anchored offshore to attract pelagic game fishes.

Main reference

Myers, R.F. 1991 Micronesian reef fishes. Second Ed. Coral Graphics, Barrigada, Guam. 298 p. (Ref. 1602)

IUCN Red List Status (Ref. 125652)

  Least Concern (LC); date assessed: July 19 2017

CITES (Ref. 131153)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless

More information
Estimates based on models

Preferred temperature (Ref. 123201): 22.7 - 29, mean 28 °C (based on 892 cells).

Phylogenetic diversity index (Ref. 82804): PD50 = 0.501 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01230 (0.01046 - 0.01447), b=2.97 (2.94 - 3.00), in cm total length, based on LWR estimates for this species (Ref. 93245).

Trophic level (Ref. 69278): 3.4 ±0.5 se; Based on food items.

Generation time: 1.2 (1.0 - 1.4) years. Estimated as median ln(3)/K based on 24 growth studies.

Resilience (Ref. 120179): High, minimum population doubling time less than 15 months (K=0.5-1.3; tmax=9).

Fishing vulnerability (Ref. 59153): Low vulnerability (23 of 100).

Climate vulnerability (Ref. 125649): Moderate vulnerability (38 of 100).

Price category (Ref. 80766): Very high; Reliable: based on ex-vessel price for this species.

Nutrients (Ref. 124155): Calcium = 300 [102, 710] mg/100g; Iron = 3.11 [1.18, 6.59] mg/100g; Protein = 20.4 [19.1, 21.7] %; Omega3 = 0.234 [0.122, 0.435] g/100g; Selenium = 84.3 [30.9, 199.6] μg/100g; VitaminA = 41.6 [13.6, 143.1] μg/100g; Zinc = 1.4 [0.8, 2.2] mg/100g (wet weight);