Muddy arrowtooth eel (Ilyophis brunneus)

Scientific name: Ilyophis brunneus Gilbert, 1891

The Muddy arrowtooth eel (Ilyophis brunneus) is a marine fish of the family Synaphobranchidae. In the aquarium it needs water at 3–5°C (37–41°F). Native range: Atlantic, Indian and Pacific. Circumtropical, except the Northeast Pacific.

Muddy arrowtooth eel care at a glance

Temperature: 3–5°C (37–41°F)

Species facts

Scientific name: Ilyophis brunneus
Family: Synaphobranchidae (Cutthroat eels)
Order: Anguilliformes (Eels and Morays)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 58.0
Depth range: 450–3120 m (1476–10236 ft)
Environment: Marine; bathypelagic; depth range 450 - 3120 m
Climate: Deep-water
Distribution: Atlantic, Indian and Pacific. Circumtropical, except the Northeast Pacific.
Conservation status (IUCN): Not Evaluated
Threat to humans: Harmless
Uses: Fisheries: of no interest
Resilience: Low, minimum population doubling time 4.5 - 14 years (Assuming tmax>10)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

Last updated 27 September 2026