Longjaw

Strongylura timucu

Belonidae · freshwater and saltwater and brackish water fish

1 minute read · Species guide

Longjaw field guide illustration

About Longjaw

Longjaw is a western Atlantic needlefish found from southeastern Florida, the Bahamas and the northeastern Gulf of Mexico to Brazil. Adults occupy reef flats, lagoons and sometimes freshwater, while young fish may shelter among floating algae.

Hunting and shelter

During daylight it approaches small fishes and shrimp near the surface before lunging at them. When alarmed it may leap or skip across the water. At night, young fish can rest alongside partly submerged mangrove grasses and sink into cover if disturbed. Their slender shape and resting position resemble vegetation.

Sources: Strongylura timucu species summary

Reproduction

The species lays eggs with surface tendrils that attach them to objects in the water. The narrow tail stalk lacks a lateral keel, and the gill covers are scaled. These anatomical characters help distinguish Strongylura timucu from other long-jawed fishes sharing warm coastal water.

Sources: Strongylura timucu species summary

Guide sources

Research reviewed 2026-10-19.

Range

Where it lives

Share of 15,682 GBIF observation records with a state location, across 4 states.
0%
100%
Share of 15,682 GBIF observation records with a state location, across 4 states.

Habitat

Water and movement

Water
WoRMS records this species in fresh water, brackish water and the sea.

Classification

Taxonomy

Kingdom
Animalia
Phylum
Chordata
Superclass
Actinopterygii
Class
Teleostei
Order
Beloniformes
Family
Belonidae
Genus
Strongylura
Species
Strongylura timucu
ITIS TSN
165554
WoRMS AphiaID
275987
GBIF key
5208038
Outside the US
ITIS also files it in Caribbean Territories.

Common questions about Longjaw

What is the scientific name of Longjaw?
The scientific name is Strongylura timucu, in the family Belonidae. Classification follows ITIS.
Does Longjaw live in fresh water or salt water?
WoRMS records this species in fresh water, brackish water and the sea.
Where has Longjaw been recorded in the United States?
GBIF has observations in 4 states, with the most records in Florida, Alabama, Maryland. The map shows observation records, which do not establish the complete natural range.

Closest relatives

Other Strongylura species

Same family

More Belonidae