Pacific Fat Sleeper
Guavivia, Pulleeqa, Pocoyo
(Dorminator latifrons)

Pacific Fat Sleeper, Dorminator latifrons: The Pacific Fat Sleeper comes in a variety of colors including jet black, shiny red brown, and yellow brown (shown here). It is characterized by a deep elongated body that is widest before the second dorsal fin. The Pacific Fat Sleeper has a wide flat head with a slightly oblique mouth and eyes on the sides. It is covered with large scales.

The Pacific Fat Sleeper has two distinct dorsal fins, the first with seven spines and the second with one spine and eight or nine rays, and an anal fin with one spine and nine or ten rays. The second dorsal fin base is very short and smaller than the distance from it to the origin of the tail fin. The Pacific Fat Sleeper does not have a lateral line.

This fish species reaches a maximum length of 15 inches. It is found in very shallow, fresh and brackish, low-current, tropical waters. It is found at elevations up to 100 feet and within the first 10 feet of the water column over sandy and muddy soft bottoms.

The Pacific Fat Sleeper feeds on detritus, plant materials, and some copepods.

Distribution in Mexico fishing areas

In Mexican fishing areas, tis found in coastal lagoons, preferring water temperatures between 25 and 33 degrees Centigrade.

The Pacific Fat Sleeper is a member of the Eleotridae Family which includes sleepers and gudgeons of the Gobiomorus and Dorminator Genera. Dorminators are similar to Gobies except they are much larger in size and they have large, separated pelvic fins. The Pacific Fat Sleeper is the only Dorminator found in Mexican waters.

Pacific Fat Sleeper fish picture 1

Pacific Fat Sleeper, Dorminator latifrons: Collected at the mouth of the river, San Jose del Cabo, Baja California Sur, Mexico, in July 2005 during a breach in the barrier caused by Hurricane Hilary, by locals using a cast net. Size approximately 10 inches. Also in the collection were the identical species in very non-photogenic red-brown and jet black colorations. —Description and photo courtesy John Snow.

Pacific Fat Sleeper fish picture 2

Pacific Fat Sleeper, Dorminator latifrons: Collected at the mouth of the river, San Jose del Cabo, Baja California Sur, Mexico. Description and photo courtesy John Snow.

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