Abstract
Large concentrations of Puget Sound rockfish (Sebastes emphaeus) were found at three locations in the San Juan Islands, Washington, at depths ranging from 10 to 25 m. Spawning females were found in August and September, the latest maturing Sebastes in this region. The existence of ripe females indicates that the taxon is not the juvenile form of another species. Total lengths of mature females ranged from 130 to 179 mm, and wet weights from 21 to 79 g. Fecundity estimates ranged from 20, 177 for a 150-mm female to 57, 103 for a 179-mm specimen. The age at maturity ranged from age II to age IV. Field and aquarium behavioral observations indicate that the species is adapted to crevice and cave existence in areas of strong currents and rocky substrate.
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