E-Fauna BC: Electronic Atlas of the Wildlife of British Columbia

Isopsetta isolepis (Lockington, 1880)
Butter Sole
Family: Pleuronectidae
Photo of species

© Aaron Baldwin  Email the photographer   (Photo ID #14939)

Source: Distribution of Isopsetta isolepis as compiled by Aquamaps
E-Fauna's interactive maps for fish are not yet available.

Species Information

Dorsal spines (total): 0; Dorsal soft rays (total): 78 - 92; Anal spines: 0; Anal soft rays: 58 - 69; Vertebrae: 39 - 42. Dorsal origin above eye. Caudal rounded. Pectoral small, bluntly pointed.

Source: FishBase. Eschmeyer, W.N., E.S. Herald and H Hammann. 1983 . (Ref. 2850)


Species Biology

Common in shallow water on soft, silty bottom. Moves into shallow water in summer and to deeper water in winter (Ref. 6885). Spawning adults exhibit north-south migrations (Ref. 6885). Feeds on chaetopod marine worms, young herring, shrimps, and sand dollars (Ref. 6885). Environment: demersal; oceanodromous (Ref. 51243); marine; depth range 20 - 425 m (Ref. 6793) Climate: temperate; 66°N - 32°N

Source: FishBase. Eschmeyer, W.N., E.S. Herald and H Hammann. 1983 . (Ref. 2850)



Eastern Pacific: Bristol Bay in the southeastern Bering Sea and Amchitka Island (Aleutian Islands) to Ventura, California, USA.

Source: FishBase. Eschmeyer, W.N., E.S. Herald and H Hammann. 1983 . (Ref. 2850)

Status Information

Origin StatusProvincial StatusBC List
(Red Blue List)
NativeSNRNo StatusNot Listed
BC Ministry of Environment: BC Species and Ecosystems Explorer--the authoritative source for conservation information in British Columbia.

Synonyms and Alternate Names

Pleuronectes isolepis

Additional Range and Status Information Links

Additional Photo Sources

General References

Recommended citation: Author, Date. Page title. In Klinkenberg, Brian. (Editor) 2021. E-Fauna BC: Electronic Atlas of the Fauna of British Columbia [efauna.bc.ca]. Lab for Advanced Spatial Analysis, Department of Geography, University of British Columbia, Vancouver. [Accessed: 2024-04-22 9:11:35 AM]
Disclaimer: The information contained in an E-Fauna BC atlas pages is derived from expert sources as cited (with permission) in each section. This information is scientifically based.  E-Fauna BC also acts as a portal to other sites via deep links.  As always, users should refer to the original sources for complete information.  E-Fauna BC is not responsible for the accuracy or completeness of the original information.

© E-Fauna BC 2021: An initiative of the Spatial Data Lab, Department of Geography, UBC