Auxis
Template:Short description Script error: No such module "Italic title". Template:Automatic taxobox
Auxis is a genus of ocean-dwelling ray-finned bony fish in the family Scombridae, and tribe Thunnini, also known as the tunas. Auxis, commonly and collectively called the frigate tunas, is one of five genera of tunas which comprise the Thunnini tribe.
Species
There are four extant species in the genus Auxis, which were formerly regarded as two polytypic species, each with two subspecies.[1] In 2021, the extinct species Auxis koreanus was described from the Neogene of South Korea.[2]
Extant species
- Auxis brachydorax Collette & Aadland, 1996
- Auxis eudorax Collette & Aadland, 1996
- Auxis rochei Risso, 1810 (bullet tuna)
- Auxis thazard Lacépède, 1800 (frigate tuna)
Extinct species
- Template:ExtinctAuxis koreanus Nam et al., 2021[2]
Description
Auxis can reach a length of Script error: No such module "convert".. They have a strong, fusiform body with a sharpened head. The teeth are small and conical. The two dorsal fins are separated by a wide gap. The pectoral fins are short. They have a dark, blue-black back, the top of the head may be deep purple or almost black. The belly is whitish and without streaks or spots.Script error: No such module "Unsubst".
Distribution
These fishes are widespread in all tropical and subtropical seas and oceans, and both mentioned species are present in the Mediterranean Sea with their subspecies (A. thazard thazard and A. rochei rochei).Script error: No such module "Unsubst".
Ecology
Auxis species are the predominant prey of pelagic gamefish off of the east coast of the United States.[3]
As food
In Japan the two species in the genus are collectively called Script error: No such module "Nihongo"., and this is also the common genus name. In Japanese cuisine, these fish are processed into Script error: No such module "lang"., a product much like Script error: No such module "lang"., though not really used in fine-dining restaurants or as condiment, but as a fish stock ingredient at more budget type popular-dining places, e.g., Script error: No such module "lang". noodle shops.Script error: No such module "Unsubst".
Although fresh fish might be eaten as sashimi or grilled, it has a lot of dark-red meat (Script error: No such module "lang".), so it is valued much less than the similar Script error: No such module "lang". (skipjack tuna). And it degrades quickly so shipment out to market is limited. The frigate tuna (Script error: No such module "lang".) is considered superior between the two.Script error: No such module "Unsubst".
Fossil record
Fossils of Auxis have been found in the Miocene of South Korea and the Pliocene of Italy and United States (age range: from 15 to 3.6 million years ago.).[4]
References
<templatestyles src="Reflist/styles.css" />
Script error: No such module "Check for unknown parameters".
External links
- Script error: No such module "Cite taxon".
- MNHN
Template:Tuna Template:Taxonbar Script error: No such module "Authority control".