- Dolly Varden in Winter shows many adult and subadult Dolly Varden grouped together in a small open spot of an ice-covered lake.
- The dissolved oxygen dropped considerably in this lake and the Dolly Varden appear to be under stress.
- The dissolved oxygen levels measured between 1.1 – 2.3 on the day this video was taken. Also several dead fish were observed in the area.
- For information about these fish look at Dolly Varden by Robert H. Armstrong and Marge Hermans
- More detailed information about Dolly Varden in Alaska can be found here Dolly Varden charr, Salvelinus malma by Robert H. Armstrong & James E. Morrow
- To learn specifically about the migration habits of Dolly Varden look at Migration of Anadromous Dolly Varden Charr in Southeastern Alaska–A Manager’s Nightmare by Robert H. Armstrong
