Bullet tuna (Auxis rochei rochei) fish species and information / pictures of Bullet tuna - Auxis rochei rochei

Bullet tuna (Auxis rochei rochei) fish species information

Scientific Name
Auxis rochei rochei

Common Name
Bullet tuna

Biology
Adults are principally caught in coastal waters and around islands (Ref. 9340). Form schools. Feed on small fishes, particularly anchovies, crustaceans (especially crab and stomatopod larvae) and squids. Eggs and larvae are pelagic (Ref. 6769). Because of their abundance, they are considered an important element of the food web, particularly as forage for other species of commercial interest. Also caught with encircling nets and troll lines (Ref. 9340). Marketed fresh and frozen (Ref. 9340) and also dried or salted, smoked and canned

Classification

Classified By
Risso, 1810
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Mackerels, tunas, bonitos (Scombridae)

Distribution

Region
Atlantic, Indian and Pacific
Distribution
Atlantic, Indian and Pacific: including the Mediterranean Sea. The eastern Pacific population is recognized as subspecies Auxis rochei eudorax (Ref. 32349). Highly migratory species, Annex I of the 1982 Convention on the Law of the Sea
Range
61°N - 51°S, 180°W - 180°E

Environment

Climate
Tropical
Water Temperature From
Unknown °C
Water Temperature To
28 °C
Depth From - meters
10 m
Depth To - meters
Unknown m
Zone
pelagic-neritic
Environment
Marine; brackish; pelagic-neritic; oceanodromous (Ref. 51243); depth range 10 - ? m
Trophic Level
4.13 s.e. 0.61 Based on diet studies.
Occurs in Marine / Salt water
True
Occurs in Brackish water
True
Occurs in Fresh Water
False
Occurs on Reefs
False
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
50.0 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.7500 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: highly commercial; gamefish: yes
Vulnerability
Low to moderate vulnerability (34 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (K=0.32; tm=2; Fec=31,000-103,000)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated