Here are eight trout facts you might not have known about.
Trout are one of the most sought after game fish in the world. It's no wonder why; they're delicious to eat and often challenging to catch. Trout species can be caught using a rod and reel or by fly fishing, a method that anglers have using for more than a thousand years. In fact, the first historical record of trout fishing dates back to 200 A.D. when ancient Roman author Claudius Aelianus wrote about fishermen using flies to catch trout on the Astræus River in Macedonia. Nearly two millennia later, anglers are still using similar methods to catch the fascinating fish. Here's eight trout facts that will give you a better understanding of the fish.
Click through the slideshow to view 10 fascinating facts about trout.
Share your favorite trout facts from this list or from your personal knowledge in the comments section.
They spend most of the day eating
Studies have shown that trout spend about 80 percent of any given day foraging for food. For trout, the search for food is a single-minded pursuit. Given their appetites, it's hardly surprising that they end up swallowing weeds, sticks, and other bits and pieces of underwater debris from time to time.
Brown trout have more chromosomes than humans
Just because humans are the most advanced life forms on the planet doesn't necessarily mean that we are the most genetically complex. Brown trout have us beat when it comes to chromosomal pairs. Scientists have indicated that the species has between 38 and 42 chromosomal pairs.
Brown trout have astounding genetic diversity
Ever wonder why brown trout are colored in so many different shades? It's their genetic diversity. Biologists have discovered as many as 50 different sub-species of brown trout. Browns are capable of interbreeding, but they usually don't spawn together with other species.
"Brainbrow trout" do not occur in nature
"Brainbow trout" are a cross between a brown trout and rainbow trout. This mix is the result of artificial breeding in fish farms. Brown trout may have the capability of spawning with other species of brown trout, but they don't breed with rainbows. No "brainbow trout" has ever been found in nature.
Genetic modifications have created some monster rainbow trout
In 2009, Lake Diefenbaker in Canada's Saskatchewan yielded a 48-pound rainbow trout, which is a potential world record. Although, that record is highly contested by many anglers. The fish is rumored to have been farm-raised and genetically enhanced for substantial growth. Genetic modification is not uncommon among farm-raised rainbow trout. A fair number of large rainbows escape from farms into the wild every year, which is why some anglers are suspicious when an unusually big rainbow record pops up.
They have excellent vision
Trout have outstanding eye sight. They can focus their eyes in different directions at the same time, which allows them to see in nearly every direction at once. Their vision is their greatest line of defense against you and your fishing line.
Trout could be breeding with farmed salmon in the wild.
Many wildlife biologists are concerned that genetically modified salmon are already breeding with wild trout. Several large farmed salmon have already been discovered in the wild, which means they very well could be interbreeding with trout. When salmon mate with trout, they produce a huge and fast-growing hybrid species that can wreak havoc on the food supply of an ecosystem.
Trout have no scales for the first month of their life
For the first month of their lives trout have no scales.