Naucrates ductor (Linnaeus, 1758)
Pilotfish
Naucrates ductor
photo by Luquet, D.

Family:  Carangidae (Jacks and pompanos), subfamily: Naucratinae
Max. size:  70 cm TL (male/unsexed)
Environment:  reef-associated; depth range 0 - 300 m
Distribution:  Circumtropical in tropical seas. Western Atlantic: Nova Scotia, Canada to Argentina (Ref. 7251). Eastern Atlantic: British Isles (rare vagrant), Norway and Bay of Biscay to Namibia, including the Mediterranean and Canary Islands. Eastern Pacific: Vancouver Island (British Columbia, Canada) to the Galapagos Islands (Ref. 2850) and Chile (Ref. 115205). Common throughout the Indian Ocean (Ref. 3197).
Diagnosis:  Dorsal spines (total): 5-6; Dorsal soft rays (total): 25-29; Anal spines: 3-3; Anal soft rays: 15-17. Body elongate, slender, and not strongly compressed; posterior end of upper jaw located at anterior rim of eye; dorsal fin with 4 or 5 spines followed by another spine and 25 to 29 soft rays (IV-V+I 25-29); lateral line without scutes; caudal peduncle with well developed fleshy keels and with dorsal and ventral peduncular fossae (Ref. 55763). Body dark to pale bluish, with 6-7 broad, dark bars; white tips on caudal lobes and on second dorsal and anal lobes (Ref. 3197).
Biology:  Oceanic species with a semi-obligate commensal relationship with sharks, rays, other bony fishes and turtles (Ref. 5217). Young are usually associated with jellyfish and drifting seaweed (Ref. 2850, 9563). Feed on scraps of host's left over, parasites and excrement; also on small fishes and invertebrates (Ref. 5288). Eggs are pelagic (Ref. 4233). Marketed fresh and salted or dried (Ref. 9283). Captured at the surface using hand nets (Ref. 26165).
IUCN Red List Status: Least Concern (LC); Date assessed: 07 November 2013 Ref. (119314)
Threat to humans:  harmless
Country info:   
 

Entered by: Papasissi, Christine - 17.10.90
Modified by: Valdestamon, Roxanne Rei - 29.04.15
Checked by: Garilao, Cristina V. - 21.06.95

Source and more info: www.fishbase.org. For personal, classroom, and other internal use only. Not for publication.


Page created by Jen, 05.08.02, php script by kbanasihan 06/09/2010 ,  last modified by sortiz, 10/02/17