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Decapterus macrosoma

Kōperu

Slender Scad

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General Information

COMMON NAMES: Slender Scad, Long-bodied Scad, Round Scad, Shortfin Scad; French Comète Fine

GLOBAL DISTRIBUTION: NATIVE e.Africa - Marquesas, Hawai‘i - tropical America; n. to s.Japan; s. to New Caledonia

COOK ISLANDS STATUS: Native; Marine, near-shore, lagoons & outer reef-slope to 200m, mid-water schools

KEY FEATURES: To 30cm. Elongate and round, with one finlet. Metallic blue above silvery below. Gill cover with small black spot on hind edge. Dorsal VIII+I, 33-38+1(spines, rays+finlet); Anal Finrays II+I, 27-30+1. Upperjaw without teeth. Scales on head between eyes do NOT extend past the pupil rear-margin. Finlet is feature of genus.

SIMILAR SPECIES: See Mackerel Scad (Decapterus macarellus).

Enlarged Image of 'Decapterus macrosoma'

Cook Islands Distribution

View Distribution Map

Southern Group: Makatea:
RR	MG	AT	MK	MT	AK	PL	TK	MN

Northern Group:
TN	MH	RK	PK	NS	SW

Key to Symbols

blank	no data
-	absent	L	localised
X	extinct 'naturally'	W	widespread
XQi	quarantine intercepted	R	recent
XQe	eradicated	?	query preceding category
P	present	T?	taxonomic query
S	seasonal	nn	present, said to have no name
O	occasional	?1	present, name not investigated
++++	very common	?2	presence not verified, no name recorded
+++	common	N/A	absent, name not expected
++	uncommon
+	rare
Cook Islands islands: RR =Rarotonga, MG = Mangaia, AT =‘Ātiu, MK=Ma‘uke, MT=Miti‘āro, AK=Aitutaki, PL=Palmerston, PN=Penrhyn, MN=Manuae, TK=Takūtea, TN=Tongareva (TS=Tongaleva Spoken, TW=Tongareva Written, they say "el" but write "r"), MH=Manihiki, RK=Rakahanga, PK=Pukapuka, NS=Nassau, SW=Suwarrow. After a Polynesian name: ^=orthography query. Countries and other: FIJ=Fiji, WT=Wallis & Futuna, SAM=Samoa, TON=Tonga, NIU=Niue, CK=Cook Islands, CKM=Cook Islands Māori, FP=French Polynesia, AUS=Australs, SOC=Societies, TAH=Tahiti, TUA=Tuamotus, MQS=Marquesas, MNG=Mangareva, PIT=Pitcain group, EAS=Easter Island, HAW=Hawai‘i, NZ=New Zealand, NZM=New Zealand Māori

Scientific Taxonomy

Decapterus macrosoma Bleeker, 1851
TAXONOMY: ANIMALIA; CHORDATA; GNATHOSTOMATA (Jawed Vertebrates); PISCES; OSTEICHTHYES; Perciformes; Percoidei; Percoidea; CARANGIDAE, Caranginae

Vouchers & References

Vouchers:
Cooks: Chan, Talbot & Sukhavisidh 1974. In: W.Fisher & Whitehead (eds). FAO species ID sheets... Area 57.v.1. FAO Rome.

References:
Special Reference: Chan, Talbot & Sukhavisidh 1974. In: W.Fisher & Whitehead (eds). FAO species ID sheets for fishery purposes. Eastern Indian Ocean (fishing area 57).v.1. FAO Rome.

text p.128 Myers (1991 2nd Ed.) Fishes of Micronesia
p.163 Randall et al. (1990) Fishes of the Great Barrier Reef....
plate 38-13 Allen (1997) Marine Fishes of Tropical Australia....

Data Update History (information):
zB02, zD02

Web Resources

Citation Information

McCormack, Gerald (2007) Cook Islands Biodiversity Database, Version 2007.2. Cook Islands Natural Heritage Trust, Rarotonga. Online at http://cookislands.bishopmuseum.org.
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