Northern Ronquil

Ronquilus jordani

The Northern Ronquil is a small marine fish found in the eastern Pacific Ocean, ranging from the Aleutian Islands to southern California. It is the sole member of its genus, Ronquilus, and belongs to the family Bathymasteridae. Divers can identify this species by its elongated body, gray coloration with dark spots, and distinctive yellow bands on its cheeks. Males exhibit a color pattern with orange and olive hues, while females are more subdued in olive green tones. This species primarily inhabits rocky continental shelves and upper slope waters, dwelling at depths ranging from 3 to 275 meters. However, most occurrences are recorded at shallower depths, with 99% found above 40 meters. While adults are benthic, spending their time near the ocean floor, larvae and juveniles are neustonic, living closer to the surface where they benefit from warmer waters and reduced predation. The Northern Ronquil is harmless to humans and is not currently evaluated by the IUCN Red List. Divers may encounter this fish among rocks, where it blends with its surroundings. It is considered rare in certain parts of its range, particularly off the coast of California.