A widespread parasite known to infect salmon and trout is actually a "micro jellyfish." This may change the way scientists define animals.
Dolly Varden, an Alaskan trout species, are able to retire from migrating each year after growing big enough to store and utilize fat reserves. This is the only known species that partakes in such a retirement.
So let's talk about toxins... and fish. They normally don't go together. In fact, most living things would prefer to avoid living near toxins. However, at times they can be very helpful, as shown in a recent strategy to help protect the beautiful rainbow trout against Coldwater Disease.
A type of rainbow trout, called steelheads, are dying off in droves as they make their way from Lake Ontario to the Salmon River in Oswego County, and the New York state Department of Environmental Conservation (DEC) says it all has to do an inexplicable vitamin B deficiency.
A potentially deadly fungus is sweeping through a river in Montana, trashing the immune systems of local trout and making them increasingly susceptible to other illnesses. Local experts are worried that this could disrupt future populations in the area, as the fungus is disrupting spawning season.
Invasive Brook Trout in Montana may be in for a real shock, as wildlife officials are considering using electrofishing to selectively remove the species from state streams, according to new research.