Bull Trout Survey 2021

>> YOUR LINK HERE: ___ http://youtube.com/watch?v=mDnH-_MRC3M

Bull trout (Salvelinus confluentus) is a native and threatened species of fish found in many of Mount Rainier's streams and rivers. However, the present status of native fish populations in the park is not well understood due to construction of dams outside the park, and previous stocking activities. In order to monitor and assess this fish's population, park staff conduct fish spawning surveys every year. During these surveys, park staff walk the rivers and streams looking for spawning fish and the redds they create. • A redd is a spawning nest made by female salmonids in the substrate along the bottom of a river, stream, or creek. A female will use her tail fin to dig a depression in which to lay her eggs, then clear a patch of larger rocks to cover and protect them. This gives the eggs and alevin (newly spawned salmon) access to clean, oxygenated water, and protection from predators. • This footage features bull trout filmed during one of those surveys this year. • Learn more about Mount Rainier fish species at https://go.usa.gov/xMfqv • NPS Video filmed by the Mount Rainier Aquatics Team. Description: Underwater footage of two large bull trout, grey-silver fish with white leading edges on their fins, hovering over the rocky bottom of a shallow creek.

#############################

New on site