Teleostei (teleosts) > Scombriformes
(Mackerels) > Scombridae
(Mackerels, tunas, bonitos) > Scombrinae
Etymology: Auxis: Greek, auxis = a variety of tunna (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-neritic. Tropical
Eastern Central Pacific.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 40.0 cm FL male/unsexed; (Ref. 32349); common length : 35.0 cm TL male/unsexed; (Ref. 55763)
Body elongate, robust, and rounded; dorsal fins widely separated; second dorsal fin followed by 8 finlets; pectoral fins long, reaching front of naked area above corselet; scales only on corselet section; each side of caudal peduncle bearing a strong keel between two smaller keels; back dark bluish purple; head almost black; 15 or more vertical bars on naked dorsal region (Ref. 55763).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Collette, B.B. and C.R. Aadland, 1996. Revision of the frigate tunas (Scombridae, Auxis), with descriptions of two new subspecies from the eastern Pacific. Fish. Bull. 94(3):423-441. (Ref. 32349)
IUCN Red List Status (Ref. 126983)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00316 (0.00137 - 0.00732), b=3.16 (2.95 - 3.37), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.3 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Assuming Fec>10,000).
Fishing Vulnerability (Ref. 59153
): Low to moderate vulnerability (34 of 100).