Pilot Fish

Naucrates Ductor
Pilotfish - Marinewise © 2025 MarineWise

Quick Facts

Scientific name Naucrates Ductor
Other names Shark Pilot, Rudder Fish, Barred Mackerel
Size Up to 70 cm (27.55 in)
Weight Up to 2 kg (4.4 lb)

Distribution

Habitat & AU Distribution Coastal & oceanic waters amongst jellyfish, drifting seaweed patches, sharks, rays & turtles
Depth Range 0 - 300 m (985 ft)
Pilotfish Distribution

Interesting Info

  • The Pilot Fish is world-famous for swimming alongside sharks, rays, and even ships—earning its name as the ocean’s “co-pilot.”
  • It can reach about 70 cm (28 in) long and up to 2 kg (4.5 lb), though most are much smaller.
  • Recognisable by 5–7 bold vertical bars running down its silvery body, a pattern that’s even sharper in juveniles.
  • In Australia, it is found in all our oceans but especially along tropical and temperate coasts, from northern waters across Queensland, down to New South Wales, and even around Sydney.
  • Globally, it ranges throughout tropical and subtropical seas of the Atlantic, Indian, and Pacific Oceans, and even into the Mediterranean.
  • Pilot Fish stick close to sharks, rays, sea turtles, and sometimes drifting debris or jellyfish rafts.
  • They feed on scraps from their hosts’ meals, external parasites, and small fishes or plankton in open water.
  • Juveniles are often found sheltering under floating seaweed or flotsam until they pair with a larger animal.
  • Divers and snorkellers often spot them circling boldly around sharks, giving away the predator’s presence.
  • Unlike remoras, Pilot Fish do not attach themselves—they swim freely alongside their hosts.
  • They are fast and agile, able to keep pace with powerful oceanic sharks such as the oceanic whitetip.
  • Spawning occurs offshore, with eggs released into open water and larvae drifting in plankton before growing into juveniles.
  • Their lifespan is thought to be 4–5 years, short compared to many of their shark companions.
  • Sailors once believed they guided ships safely across oceans, hence the name “Pilot Fish.”
Species Interaction

Commercial Fishing, Snorkelling & Diving

For snorkellers and divers, the Pilot Fish is often an unforgettable sight—zebra-striped companions shadowing sharks just below the surface. They are not targeted by anglers or commercial fisheries but sometimes appear in bycatch. Historically, sailors saw them as a lucky omen, believing they “piloted” ships or sharks to their destination.

Scientific Classification

Kingdom: Animalia

Phylum: Chordata

Class: Actinopterygii

Order: Carangiformes

Family: Carangidae

Genus: Naucrates

Species: Naucrates ductor

Conservation Status

The Pilot Fish is listed as Least Concern by the IUCN. It is widespread and abundant in tropical and subtropical seas. Its survival, however, is tied to the health of the large predators it follows—declines in oceanic sharks could indirectly affect its populations.

Fish Taste Quality

Pilot Fish are edible but rarely eaten. The flesh is soft and not highly valued, and the species is better known for its striking shark-shadowing behaviour than as a food fish.

Taste Rating: 1/5

How to catch
Pilot Fish

Catch Difficulty: Difficult

Tackle: NA

Bait: NA

Technique: NA

Popularity: Not targeted - Commercial fishing bycatch

Recreational Viewing
- Snorkeling & Scuba

Finding: Easy

Temperament: Shy

Location: Inner Reef, Outer Reef, Open Ocean

Danger: None