Home · Atherinopsidae · California grunion
California grunion (Leuresthes tenuis) — Atherinopsidae

California grunion

Leuresthes tenuis

The California grunion (Leuresthes tenuis) is a saltwater fish of the family Atherinopsidae that grows up to 19 cm.

Length
19 cm
Water
Saltwater
Depth
0.0–18.0 m
Diet
Carnivore
Behaviour
Large groups
Body shape
Elongated (eel-like)
Substrate
Open water
Danger
Harmless
Edibility
Rarely eaten

Description

The California grunion is a silverside (Atherinopsidae) from the eastern Pacific off the coast of California and Mexico. The species grows to about 19 cm and has a slender, silvery body with a bright flank stripe. Adults live close inshore, usually at or near the surface. The species is famous for its spawning runs: at high tide after a full or new moon the fish come ashore en masse on sandy beaches, where females wriggle their bodies into the wet sand to deposit eggs in it. The larvae are planktonic. It feeds on plankton. The species is harmless to humans.

Frequently asked questions

How do you recognise the California grunion?

The California grunion has an elongate, eel-like body, is mainly silver-grey and shows a horizontal stripes pattern.

Where does the California grunion live?

The California grunion lives in the sea (marine waters) and is mostly found around open water.

How big does the California grunion get?

The California grunion grows to a maximum of about 19 cm.

Is the California grunion dangerous to humans?

No, the California grunion is harmless to humans.

Is the California grunion edible?

The California grunion is rarely eaten.

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →

All data

Identification

Dutch name
Californische grunion sourced
English name
California grunion verified
Scientific name
Leuresthes tenuis
Family
Atherinopsidae
Other names
Californian grunion; Grunion verified

Appearance

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

Habitat & distribution

Water type
Saltwater sourced
Substrate
Open water sourced
Min depth (m)
0.0 verified
Max depth (m)
18.0 verified
Origin
Native sourced

Behaviour & biology

Diet
Carnivore sourced
Social behaviour
Large groups inferred
Territorial
No inferred
Reproduction
Separate sexes sourced
Sexual dimorphism
No inferred
levensduur_max_jaar
8.0 verified

For anglers

Edibility
Rarely eaten sourced
Fishing method
Sportvissen met kunstaas of (dood/levend) aasvis door te trollen, te werpen of drijvend te vissen in open water. inferred
Regulations source
FishBase ↗ inferred

Safety

Danger to humans
Harmless sourced

Status & sources

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

More from the family Atherinopsidae

Download Fin's Fish Guide

Identify fish in seconds, log your catches and dives. Join the TestFlight beta.

Get the beta →