Mar 3, 2015 | Dipper, Dolly Varden
When salmon spawn they displace huge numbers of aquatic insects. These insects drift and swim downstream and often settle in pools containing woody debris. These are areas where salmon do not spawn so the insects are not disturbed by their spawning activities....
Feb 24, 2015 | Fish, Stickleback
The threespine stickleback gets its name from the three spines located just in front of its dorsal fin. Two forms of threespine stickleback occur in Alaska–marine and freshwater. The marine form lives in the sea for most of its life, migrating into fresh water...
Feb 17, 2015 | Fish, Sculpins
These fish are very common in the streams, especially in Southeast Alaska. They are called Coastrange Sculpins. They can be very abundant — one Southeast Stream was estimated to have 10,000 sculpins per half mile of stream. They usually hide during the day and...
Feb 4, 2015 | Dolly Varden, Fish
This video shows a Dolly Varden sac fry that hatched just a few days ago. It will live in the stream bottom among the rocks for about two months. Then it will emerge from among the rocks and live in the stream and feed on aquatic insects. What will it eat while it...
Feb 3, 2015 | Dolly Varden, Salmon
The beginning of this video shows an aerial view of the winter habitat of juvenile fish within this stream. This video was taken on February 2, 2015 — a winter without much snow. The fish are concentrated in this one area that has numerous springs entering it....
Jan 27, 2015 | Dolly Varden, Salmon
This video is meant to illustrate the large numbers of juvenile fish, such as Dolly Varden and coho, that concentrate in areas of springs during the winter. The value of these areas should be considered critical to the overwinter survival of juvenile fish in...