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Longhorn blenny (Hypsoblennius exstochilus) — Blenniidae

Longhorn blenny

Hypsoblennius exstochilus
Family: Blenniidae
LC · Least Concern

The Longhorn blenny (Hypsoblennius exstochilus) is a saltwater fish of the family Blenniidae that grows up to 5 cm.

Length
5 cm
Water
Saltwater
Diet
Omnivore
Behaviour
Solitary
Body shape
Elongated (eel-like)
Substrate
Sand / mud bottom
Danger
Harmless
Range
Western Atlantic; shallow rocky areas.
Edibility
Not eaten

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Description

The longhorn blenny is a blenny (Blenniidae) from the western Atlantic Ocean. The species is small, has a blunt head profile with fringed tentacles above the eyes and a scaleless body. It inhabits shallow rocky areas, where it shelters in cracks, empty shells and holes and defends its territory. It feeds on algae and small bottom invertebrates. The eggs are adhesive and guarded by the male. The species is harmless to humans.

Frequently asked questions

How do you recognise the Longhorn blenny?

The Longhorn blenny has an elongate, eel-like body, is mainly brown and shows a spots pattern. Fringe-like crests above the eyes; territorial blenny that shelters in crevices and shells.

Where does the Longhorn blenny live?

The Longhorn blenny lives in the sea (marine waters) and is mostly found around sand or mud bottom. Western Atlantic; shallow rocky areas.

How big does the Longhorn blenny get?

The Longhorn blenny grows to a maximum of about 5 cm.

Is the Longhorn blenny dangerous to humans?

No, the Longhorn blenny is harmless to humans. None required: this species is harmless to humans.

Is the Longhorn blenny edible?

The Longhorn blenny is not usually eaten.

More photos

Longhorn blenny (Hypsoblennius exstochilus) — Blenniidae — 2
Jillian Daly (CC BY-NC 4.0) via GBIF — iNaturalist
Longhorn blenny (Hypsoblennius exstochilus) — Blenniidae — 3
iNaturalist ((c) Dave Stone, some rights reserved (CC BY-NC))
Longhorn blenny (Hypsoblennius exstochilus) — Blenniidae — 4
iNaturalist ((c) Liz Wyatt, some rights reserved (CC BY-NC))
Longhorn blenny (Hypsoblennius exstochilus) — Blenniidae — 5
iNaturalist ((c) nicoleboriski, some rights reserved (CC BY-NC))

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All data

Identification

English name
Longhorn blenny verified
Scientific name
Hypsoblennius exstochilus
Family
Blenniidae
Other names
Longhorn blenny; Longhorn Blenny verified

Appearance

Size class
Small verified
Max length (cm)
5 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Brown
Pattern
Spots
Tail shape
Rounded
Mouth position
Terminal
Lips
Thick / fleshy
Barbels
No sourced
Dorsal fins
One continuous
Dorsal spines
Yes sourced

Habitat & distribution

Water type
Saltwater sourced
Substrate
Sand / mud bottom sourced
Natural range
Western Atlantic; shallow rocky areas.
Origin
Native sourced

Behaviour & biology

Diet
Omnivore sourced
Diet (detail)
Algae and small benthic invertebrates sourced
Social behaviour
Solitary
Territorial
Yes
Reproduction
Separate sexes sourced
Sexual dimorphism
No
Seasonality
Present year-round in its habitat; no pronounced seasonality known.
Special features
Fringe-like crests above the eyes; territorial blenny that shelters in crevices and shells. sourced

For anglers

Edibility
Not eaten sourced
Fishing method
Not a target species for angling; at most an incidental catch or usable as baitfish.
Regulations source

Safety

Danger to humans
Harmless sourced
First aid
None required: this species is harmless to humans. sourced

Status & sources

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

Same genus Hypsoblennius

More from the family Blenniidae

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