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Common halfbeak (Hyporhamphus unifasciatus) — Hemiramphidae

Common halfbeak

Hyporhamphus unifasciatus
Family: Hemiramphidae
LC · Least Concern

The Common halfbeak (Hyporhamphus unifasciatus) is a fish that lives in both fresh and salt water of the family Hemiramphidae that grows up to 30 cm.

Length
30 cm
Water
Euryhaline
Depth
0.0–5.0 m
Diet
Omnivore
Behaviour
Schooling
Activity
Diurnal
Body shape
Elongated (eel-like)
Substrate
Open water
Danger
Harmless
Range
Western Atlantic from the USA to Brazil, in surface water of the coast, bays and estuaries; tolerates brackish water.
Edibility
Rarely eaten

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Description

The common halfbeak is a slender, silvery surface fish of the family Hemiramphidae (halfbeaks) reaching about 30 cm. Characteristic is the unequal jaw: the upper jaw is short and triangular, while the lower jaw extends far as a long, needle-like beak with a red or orange tip. A fine band runs along the silver flank. The species forms schools in surface water of coast, bays and estuaries along the western Atlantic coast and tolerates brackish water. As an omnivore it eats drifting algae and seagrass, supplemented with zooplankton and small crustaceans. Through its great numbers it is an important prey fish for predators and seabirds and a much-used bait fish.

Frequently asked questions

How do you recognise the Common halfbeak?

The Common halfbeak has an elongate, eel-like body, is mainly silver-grey and shows a horizontal stripes pattern. Slender silvery little surface fish with a short upper jaw and a long, needle-shaped lower jaw with a red tip. Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with caution or avoid in risk areas.

Where does the Common halfbeak live?

The Common halfbeak lives in both fresh and salt water and is mostly found around open water. Western Atlantic from the USA to Brazil, in surface water of the coast, bays and estuaries; tolerates brackish water.

How big does the Common halfbeak get?

The Common halfbeak grows to a maximum of about 30 cm. On average the species is around 20 cm.

Is the Common halfbeak dangerous to humans?

No, the Common halfbeak is harmless to humans. None required: this species is harmless to humans.

Is the Common halfbeak edible?

The Common halfbeak is rarely eaten.

More photos

Common halfbeak (Hyporhamphus unifasciatus) — Hemiramphidae — 2
iNaturalist ((c) marielacm27, some rights reserved (CC BY-NC))
Common halfbeak (Hyporhamphus unifasciatus) — Hemiramphidae — 3
iNaturalist ((c) awakida, some rights reserved (CC BY-NC))
Common halfbeak (Hyporhamphus unifasciatus) — Hemiramphidae — 4
Wikimedia Commons — SEFSC Pascagoula Laboratory; Collection of Brandi Noble, NOAA/NMFS/SEFSC (Public domain)
Common halfbeak (Hyporhamphus unifasciatus) — Hemiramphidae — 5
Wikimedia Commons — Barton Warren Evermann / Millard Caleb Marsh (Public domain)
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All data

Identification

English name
Common halfbeak verified
Scientific name
Hyporhamphus unifasciatus
Family
Hemiramphidae
Other names
Balaou blanc; Ballyhoo; Halfbeak; Halfbek; Silverstripe halfbeak; White balao; Atlantic silverstripe halfbeak; Coomon halfbeak; Half beaks; Scissors; Silver-lined halfbeak; Skipjack verified

Appearance

Size class
Medium verified
Max length (cm)
30.0 verified
Average length (cm)
20.0 verified
Body shape
Elongated (eel-like) sourced
Dominant colour
Silver / grey sourced
Pattern
Horizontal stripes sourced
Tail shape
Forked inferred
Mouth position
Superior (upward) inferred
Lips
Thin inferred
Barbels
No verified
Dorsal fins
One continuous sourced
Dorsal spines
No verified

Habitat & distribution

Water type
Euryhaline verified
Substrate
Open water verified
Min depth (m)
0.0 verified
Max depth (m)
5.0 verified
Natural range
Western Atlantic from the USA to Brazil, in surface water of the coast, bays and estuaries; tolerates brackish water. verified
Origin
Native verified

Behaviour & biology

Diet
Omnivore verified
Diet (detail)
Floating algae, seagrass, zooplankton and small crustaceans sourced
Social behaviour
Schooling verified
Territorial
No verified
Activity
Diurnal inferred
Reproduction
Separate sexes verified
Sexual dimorphism
No verified
Seasonality
Forms shoals at the surface of shallow coastal water; the eggs attach to seagrass and seaweeds with threads. sourced
Special features
Slender silvery little surface fish with a short upper jaw and a long, needle-shaped lower jaw with a red tip. Note: in tropical areas this species can cause ciguatera poisoning when eaten; large specimens of coral reef predators can accumulate the toxin. Eat with caution or avoid in risk areas. verified

For anglers

Edibility
Rarely eaten verified
Fishing method
Caught at the surface with fine nets or hooks; used as bait and as a small food fish sourced
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless verified
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 Hyporhamphus

More from the family Hemiramphidae

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