Quillback rockfish have slate-brown coloring mottled with yellow and orange, with the rear body half more uniformly dark. They also have brown spots on the gill cover and throat. The first few spines of the first dorsal fin are very tall and have a deeply incised membrane.
Habitat
Subtidally to 900’ depth, among rocks or kelp, rarely found out in the open.
Diet
Adults feed on crustaceans, other rockfish and flatfish, worms, bivalves, and fish eggs.
Life History
These fish give birth between April and July. Larvae spend the first 1-2 months as plankton and then settle near-shore, starting at 0.4 inches long, often to shallow, vegetated habitats, such as kelp or eelgrass beds. As they age, they move to deeper waters. Quillback rockfish can reach lengths of 24 inches and live up to 90 years.
IUCN Status
Not Evaluated
Ecosystem & Cultural Importance
These fish are integral members of marine food webs in rocky reef, kelp, and eel grass communities. Adults serve as food to coho salmon, yelloweye rockfish, lingcod, Steller sea lions, and orcas.
These fish exhibit homing behavior. A quillback will return to its home site when experimentally displaced as far as 4 miles away.
Citations & Other Resources
Love, Milton S. Certainly more than you want to know about the fishes of the Pacific Coast: a postmodern experience. Really Big Press: Santa Barbara. 2011. 649 pp. ISBN 978-0-9628725-6-3.
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