Common name: Dolly Varden
available through www.itis.gov
Identification: Scott and Crossman (1973); Wydoski and Whitney (1979); Morrow (1980); Page and Burr (1991).
Size: 63 cm.
Native Range: Arctic and Pacific drainages from Alaska to Puget Sound, Washington. Also in Asia (Page and Burr 1991).
Puerto Rico &
Hydrologic Unit Codes (HUCs) Explained
Native range data for this species provided in part by NatureServe
Interactive maps: Point Distribution Maps
Table 1. States with nonindigenous occurrences, the earliest and latest observations in each state, and the tally and names of HUCs with observations†. Names and dates are hyperlinked to their relevant specimen records. The list of references for all nonindigenous occurrences of Salvelinus malma are found here.
Table last updated 5/25/2018
† Populations may not be currently present.
* HUCs are not listed for states where the observation(s) cannot be approximated to a HUC (e.g. state centroids or Canadian provinces).
Means of Introduction: Intentional introductions for sportfishing. Introductions in Colorado took place in the 1890s and in 1968-1970 (Wiltzius 1985). Dolly Varden were introduced once into Wyoming, in 1968 (Baxter and Simon 1970).
Status: Introductions have failed to establish populations.
Impact of Introduction: The impacts of this species are currently unknown, as no studies have been done to determine how it has affected ecosystems in the invaded range. The absence of data does not equate to lack of effects. It does, however, mean that research is required to evaluate effects before conclusions can be made.
Revision Date: 6/27/2019
Peer Review Date: 4/1/2016
Fuller, P., 2019, Salvelinus malma (Walbaum in Artedi, 1792): U.S. Geological Survey, Nonindigenous Aquatic Species Database, Gainesville, FL, https://nas.er.usgs.gov/queries/FactSheet.aspx?SpeciesID=941, Revision Date: 6/27/2019, Peer Review Date: 4/1/2016, Access Date: 7/20/2019
This information is preliminary or provisional and is subject to revision. It is being provided to meet the need for timely best science. The information has not received final approval by the U.S. Geological Survey (USGS) and is provided on the condition that neither the USGS nor the U.S. Government shall be held liable for any damages resulting from the authorized or unauthorized use of the information.