Home · Regalecidae · Russell's oarfish
Russell's oarfish (Regalecus russelii) — Regalecidae

Russell's oarfish

Regalecus russelii
Family: Regalecidae

The Russell's oarfish (Regalecus russelii) is a fish of the family Regalecidae that grows up to 800 cm.

Length
800 cm
Substrate
Open water
Danger
Harmless

Description

Russell's oarfish is a giant, rare open-ocean fish (Regalecidae) found worldwide in deeper, temperate and tropical waters. The species can reach at least 8 metres and has an extremely elongate, silvery, ribbon-like body with a long red dorsal fin that rises into a plume of extended rays on the head. Hovering upright in the water column it filters small zooplankton, especially krill. Stranded specimens feed folk tales of sea serpents. The fish is harmless to humans.

Frequently asked questions

How do you recognise the Russell's oarfish?

The Russell's oarfish is mainly silver-grey.

Where does the Russell's oarfish live?

The Russell's oarfish is mostly found around open water.

How big does the Russell's oarfish get?

The Russell's oarfish grows to a maximum of about 800 cm.

Is the Russell's oarfish dangerous to humans?

No, the Russell's oarfish is harmless to humans.

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →

All data

Identification

Dutch name
Russells haringkoning sourced
English name
Russell's oarfish sourced
Scientific name
Regalecus russelii
Family
Regalecidae

Appearance

Max length (cm)
800 sourced
Dominant colour
Silver / grey sourced
Tail shape
Straight inferred

Habitat & distribution

Substrate
Open water sourced
Origin
Native inferred

Behaviour & biology

Territorial
No inferred
Reproduction
Separate sexes inferred
Sexual dimorphism
No inferred

For anglers

Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified

Status & sources

Sources
FishBase via GBIF (DwC-A), CC-BY-NC 4.0

Same genus Regalecus

More from the family Regalecidae

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →