Thresher sharks

Pelagic thresher (Alopias pelagicus)

The Pelagic thresher (Alopias pelagicus) belongs to the family Alopiidae (thresher sharks) and is found in the Red Sea, with a wider Indo-Pacific range. It is a carnivore and usually seen alone. It reaches about 276 cm and is found at 1–50 m depth. IUCN conservation status: Endangered. Treat it with caution (caution): do not touch or handle it.

Pelagic thresher (Alopias pelagicus), a Red Sea fish of the thresher sharks family
Photo: iNaturalist / Wikimedia Commons

Quick facts

Scientific nameAlopias pelagicus
FamilyThresher sharks (Alopiidae)
Common name (IT)Squalo volpe pelagico
Common name (EN)Pelagic thresher
Maximum size276 cm
Depth1–50 m
DistributionRed Sea and Indo-Pacific
IUCN statusEN — Endangered
HazardCaution

Description

Present throughout the Red Sea, with a broader range across the tropical Indo-Pacific.

Diving hazard — Caution: keep your distance, and never touch, corner or feed it.

Where it lives

Present throughout the Red Sea, with a broader range across the tropical Indo-Pacific.

  • Red Sea
  • Indo-Pacific

Diving safety

Caution. This is a predator or a fish with a strong bite. It is not looking for people — watch from a distance, do not touch, chase or feed it.

If it happens

  • For a bite: leave the water, control bleeding with direct pressure, clean the wound.

After

  • Marine bites infect readily — seek medical care and tetanus cover.

Frequently asked questions

What family does the Pelagic thresher belong to?
The Pelagic thresher (Alopias pelagicus) belongs to the family Alopiidae (thresher sharks).
Is the Pelagic thresher dangerous?
It needs caution: Caution. Keep your distance and do not touch or handle it.
Is the Pelagic thresher endemic to the Red Sea?
No — it occurs in the Red Sea but its range extends across the Indo-Pacific.
How big does the Pelagic thresher get?
It reaches a maximum length of about 276 cm.

Explore the Pelagic thresher in 3D in the interactive atlas →