Pacific Mutton Hamlet

Sightings

2026 season, numbered oldest first, every one sourced

Photos

More of each life stage

The California photos sit with their numbered sightings above. If you photographed this animal in California this season, post it to the Coastal Bulletin.

Home Range

Where it normally lives

Islas San Benito and Natividad in central Baja California to Peru, including the Gulf of California and the Galapagos Islands.

Range source: Love et al. 2021, via Zenodo · FishBase · Mexican Fish.com

Love and colleagues list the Pacific mutton hamlet from Islas San Benito and Natividad in central Baja California, and along the Pacific coast of the Baja peninsula as far north as Laguna de San Ignacio. From there it runs through the Gulf of California and south to Peru and the Galapagos Islands. Mexican Fish puts the northern limit at Cedros Island, also in central Baja California.

Identification

The Pacific mutton hamlet is a small grouper with a deep, flattened body, large eyes, a short snout and a rounded tail. Adults are rusty brown or red. Rusty fish have red eyes and darker brown blotches that form irregular bars along the sides, and both colors carry many pale and dark brown spots on the head and body. Rows of dark spots on the pectoral fins are the key to the ID, according to Mexican Fish. The rivulated mutton hamlet is nearly identical, but it has a thinner body and spots that merge into broken stripes along the sides.

The sources read for this page do not describe the color of young fish. The juvenile photographed at La Jolla Shores is rusty orange, with pale flecks, brown blotches and a red eye.

Natural History

This is a shy, well-camouflaged fish of seagrass beds and rocky reefs, usually about 7 inches long and reaching about 12. It hides by day in rock crevices, seagrass or sand, then comes out at night to hunt crustaceans on the bottom. FishBase gives a depth range of about 3 to 164 feet, and Mexican Fish reports a catch at about 180 feet. Mexican Fish says little is known about its movements, reproduction or growth.

In California

On October 28, 2026, a Pacific mutton hamlet was logged on iNaturalist at Redondo Beach, and iNaturalist users agreed on the ID. It was the only California record on iNaturalist on October 31, 2026. On October 30, 2026, Matt Wilbur photographed a juvenile among seagrass at La Jolla Shores. A commenter on his post suggested the ID, and Nautical Nick confirmed it.

Taxonomy

Rarity

Rarity in the compendium is Nautical Nick's call on how likely a diver is to run into the animal on the California coast this season, not how rare it is where it normally lives.