| Grammatorcynus bilineatus (Rüppell, 1836) | |
| Family: | Scombridae (Mackerels, tunas, bonitos), subfamily: Scombrinae | picture (Grbil_u0.jpg) by First, D.
Point map | |
| Order: | Perciformes (perch-likes) |
| Class: | Actinopterygii (ray-finned fishes) |
| FishBase name: | Double-lined mackerel |
| Max. size: | 100.0 cm FL (male/unsexed; (Ref. 9684)); max. published weight: 3,500 g (Ref. 168) |
| Environment: | reef-associated; oceanodromous (Ref. 51243); marine; depth range 15 – ? m (Ref. 48637) |
| Climate: | subtropical; 31°N - 25°S, 32°E - 175°W |
| Importance: | fisheries: minor commercial; gamefish: yes; price category: very high; price reliability: very questionable: based on ex-vessel price for species in this family |
| Resilience: | Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.) |
| Vulnerability: | High vulnerability (56.39). (Ref. 59153) |
Distribution:
Gazetteer | Indian Ocean: Red Sea eastward to the Andaman Sea. Western Pacific: Ryukyu Islands to the northern coasts of Australia, including the Marshall Islands and Fiji. Often confused in the literature with Grammatorcynus bicarinatus. |
| Morphology: | Dorsal spines (total): 11 - 13; Dorsal soft rays (total): 10 - 14; Anal spines: 0; Anal soft rays: 10 – 14. Mouth relatively small, upper jaw reaching about to middle of eye. Pectoral fins stout. Interpelvic process short and single. No prominent anterior corselet present. Swim bladder present. Vertebrae 14 precaudal plus 17 caudal, total 31 as in mackerel (Scomber and Rastrelliger). |
| Biology: | Inhabits open water but often seen swimming near outer reef walls or deep clear-water slopes (Ref. 48637). Found mostly in shallow reef waters where it forms large schools. Feeds on crustaceans and fishes, particularly clupeoids (Sardinella and Thrissocles), but also other fishes such as Sphyraena and Balistes. Marketed canned and frozen (Ref. 9684). Its flesh is mild and pleasantly flavored, but brushed with lemon juice prior to cooking to remove the ammonia-like smell (Ref. 9684). |
| Red List Status: | Not Evaluated (Ref. 57073) |
| Dangerous: | harmless |
| Coordinator: | Collette, Bruce B. |
| Main Ref: | Collette, B.B. and C.E. Nauen. 1983 . (Ref. 168) |
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