California Needlefish

Strongylura exilis

Belonidae · freshwater and saltwater and brackish water fish

1 minute read · Species guide

California Needlefish field guide illustration

About California Needlefish

California needlefish is a long-bodied eastern Pacific fish found from California to Peru, including the Galápagos Islands. Adults gather in small schools in coastal waters and can enter freshwater. Bays, harbors and mangrove lagoons are all reported habitats.

Identification and feeding

The tail fin has a shallow inward curve rather than a deeply forked outline. Fin-ray and vertebral counts help distinguish it from other needlefishes in technical keys. Its diet consists mainly of small fishes. Despite the common name, much of its range lies well south of California.

Sources: Strongylura exilis species summary

Eggs and young

The species lays eggs with long filaments that fasten them to plants or floating material. Larvae occur at the surface. That attachment-based egg stage differs from a freely drifting egg and gives floating objects and coastal vegetation a role in its early life history.

Sources: Strongylura exilis species summary

Guide sources

Research reviewed 2026-10-19.

Range

Where it lives

Share of 150 GBIF observation records with a state location, across 1 states.
0%
100%
Share of 150 GBIF observation records with a state location, across 1 states.

Share of records by state

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 exilis
ITIS TSN
165555
WoRMS AphiaID
275978
GBIF key
5208040

Common questions about California Needlefish

What is the scientific name of California Needlefish?
The scientific name is Strongylura exilis, in the family Belonidae. Classification follows ITIS.
Does California Needlefish live in fresh water or salt water?
WoRMS records this species in fresh water, brackish water and the sea.
Where has California Needlefish been recorded in the United States?
GBIF has observations in 1 states, with the most records in California. The map shows observation records, which do not establish the complete natural range.

Closest relatives

Other Strongylura species

Same family

More Belonidae