The salmon experienced a large mortality based on monitoring data downstream. CDFW said in a statement there are indications the fish were killed by gas bubble disease that likely occurred as they ...

However, officials believe that the salmon were subjected to severe pressure changes, leading to gas bubble disease, while passing through the Iron Gate Dam tunnel. Gas bubble disease occurs when ...

Scientists found no evidence the salmon died because of oxygen levels or higher levels of particles in the river, and the dead fish showed signs of gas bubble disease, officials said.

The California Department of Fish and Wildlife said that 830,000 young Chinook salmon, released from ... are presumed to have died due to gas bubble disease in the Klamath River.

"The visual appearance of the dead fry detected by monitoring equipment points to gas bubble disease. Monitoring equipment documented other healthy yearling coho and Chinook salmon that came from ...

There was no indication that high levels of particles or low oxygen were responsible for the death of the salmon, officials said. Gas bubble disease was detected in the fish’s appearance ...