Hyperprosopon argenteum

Last updated

Walleye Surfperch
Hyperprosopon argenteum 152589906.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Blenniiformes
Family: Embiotocidae
Genus: Hyperprosopon
Species:
H. argenteum
Binomial name
Hyperprosopon argenteum
(Gibbons, 1854)
Synonyms
  • Hyperprosopon argenteusGibbons, 1854
Drawing of H. Argenteum Hyperprosopon argenteum.jpg
Drawing of H. Argenteum

Hyperprosopon argenteum, the walleye surfperch, is a species of surfperch native to the eastern Pacific Ocean. It may also be known as the bigeye perch and chinese pompano. [1]

Contents

Description

The body of the Walleye surfperch is oval and strongly compressed. The head is small and the eyes are large. The mouth is small and slanted downward. Its normal colouration is silver with faint dusky shading on the back, and may posses broken, vertical bars on its side. [2]

The Walleye surfperch can be distinguished from other surfperch, especially the similar silver surfperch (H. ellipticum), by the distinctive black tips on the ventral fins, as well as black borders on the tail and anal fins. This species can reach a length of 30.5 cm (12.0 in) length, but are often under 26 cm (10 in). [1] [3]

Range

Walleye surfperch are found in the Eastern Pacific Ocean from Vancouver Island, British Columbia, Canada to central Baja California, Mexico, including Guadalupe Island (off Northern-central Baja California).

Natural History

Walleye surfperch live in the surf zone along sandy beaches, near rocks, and around piers and artificial structure.

A school of walleye surfperch displaying different levels of barred patterns Hyperprosopon argenteum 172827140.jpg
A school of walleye surfperch displaying different levels of barred patterns

Mating takes place in October, November and December when the usual dense schools disperse with the males and females pairing off. The approach of another male is immediately countered by a quick charge from the courting male toward the intruder. They are viviparous, with the females giving birth to live young. Between 1 and 19 young, depending on the size of the mother, are born the following spring. They average a little over 3.8 cm (1.5 in) in length at birth. They reach maturity the following fall and winter; in fact, the largest proportion of the breeding population appears to be young of the year. [3]

Walleyes are probably short-lived as are most other surfperches. A 27 cm (10.5 in) inch walleye was only 6 years old. [3] Walleye surfperch commonly occur in dense schools, sometimes with other species of surfperch.

Due to their large eyes, they are a primarily nocturnal feeder, but can also be caught during the day. They feed on small crustaceans and zooplankton. [1] [3]

3 walleye surfperch caught at Pacifica Pier, Nov 2024. 3 Walleye Surfperch.webp
3 walleye surfperch caught at Pacifica Pier, Nov 2024.

Fishing information

Walleye surfperch can be plentiful, easy to catch and occur in large numbers in surf, shore and pier catches, and are a favorite of California pier anglers. They are considered an important recreational game fish.

References

  1. 1 2 3 "Walleye Surfperch". Pier Fishing in California. 2017-03-16. Retrieved 2025-03-07.
  2. "Hyperprosopon argenteum summary page". FishBase. Retrieved 2025-03-07.
  3. 1 2 3 4 "CA Marine Species Portal". marinespecies.wildlife.ca.gov.