Dogtooth tuna (Gymnosarda unicolor) fish species and information / pictures of Dogtooth tuna - Gymnosarda unicolor

Dogtooth tuna (Gymnosarda unicolor) fish species information

Scientific Name
Gymnosarda unicolor

Common Name
Dogtooth tuna

Biology
Dorsal spines (total): 13 - 15; Dorsal soft rays (total): 12-14; Anal spines: 0; Anal soft rays: 12 - 13; Vertebrae: 38. Mouth fairly large, upper jaw reaching to middle of eye. Laminae of olfactory rosette 48 to 56. Interpelvic process large and single. Lateral line strongly undulating. Body naked posterior to corselet. Swim bladder large, spleen visible in ventral view on the right side of the body. The back and upper sides brilliant blue-black, lower sides and belly silvery; no lines, spots or other markings on the body.

Classification

Classified By
R?ppell, 1836
Class
Ray-finned fishes (Actinopterygii)
Order
Perch-like fish (Perciformes)
Family
Mackerels, tunas, bonitos (Scombridae)

Distribution

Region
Indo-Pacific
Distribution
Indo-Pacific: Red Sea and East Africa to French Polynesia, north to Japan, south to Australia.
Range
31°N - 30°S, 32°E - 130°W

Environment

Climate
Tropical
Water Temperature From
20 °C
Water Temperature To
28 °C
Depth From - meters
10 m
Depth To - meters
100 m
Zone
reef-associated
Environment
Marine; reef-associated; oceanodromous (Ref. 51243); depth range 10 - 100 m (Ref. 9710)
Trophic Level
4.5 s.e. 0.75 Based on food items.
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
True
Is kept in Aquariums
False

Physical Size and Genetics

Maximum Length
248 cm
Common Length
190 cm
Phylogenetic Diversity Index
PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Fisheries: minor commercial; gamefish: yes
Vulnerability
High to very high vulnerability (73 of 100)
Resilience
Low, minimum population doubling time 4.5 - 14 years (Assuming tmax>10)
Threat To Humans
  Reports of ciguatera poisoning (Ref. 168)
IUCN Red List Status
  Not Evaluated