Interesting Rainbow trout Facts: Rainbow trout can reach 16 inches in length and 2 to 8 pounds of weight. Rainbow trout are highly in demand, and as such they’re found in fish farms around the world. One of the most interesting facts about rainbow trout is that they will always return to the area they were born when it comes time to spawn their eggs. They average about 20 to 30 inches long and around 8 pounds, but can grow as long as 4 feet and weigh up to 53 pounds. While they are found on coastal regions, they are actually almost always freshwater fish, living in cold water tributaries which eventually lead into the Pacific Ocean. These days you'll find him teaching English and writing, while running his own campervan business. The rainbow trout is native only to the rivers and lakes of North America, west of the Rocky Mountains, but its value as a hard-fighting game fish and tasty meal has led to its introduction throughout the world. As previously mentioned, the rainbow trout is only … Why Do We Eat Pumpkin Pie At Thanksgiving? The rainbow trout is native to a very small region of the world, which includes the west coast of North America and the Kamchatka peninsula of Russia. There’s one very important exception though – rainbow trout cannot live in polluted water! This ranges from fish smaller than them to fish eggs, crayfish, and shrimp. All rights reserved. When it comes time to spawn their eggs, female trout will find a bed of fine gravel in a calm, but shallow area. Firstly, we have the originally identified rainbow trout, the Kamchatka rainbow trout, from which all others are categorized. In fact, it’s due to this that rainbow trout are actually used in water purification facilities to test pollution levels in the water. In 2005 a man by the name of Sean Konrad caught the world-record-breaking fish in Lake Diefenbaker, in Saskatchewan. Largest recorded specimen had 48 pounds of weight. Famous for their spikes, they play an important role in our ocean’s ecosystems. They prefer cool, clear rivers, streams, and lakes, though some will leave their freshwater homes and follow a river out to the sea. Why Are Black Cats Associated With Halloween? Some people love fly-fishing for rainbow trout, some love eating them, and some just like their cool rainbow pattern – it’s no small surprise that they’re so popular worldwide. They are torpedo-shaped and generally blue-green or yellow-green in color with a pink streak along their sides, white underbelly, and small black spots on their back and fins. Interestingly, they will always return to freshwater to spawn their eggs. These migratory adults, called steelheads because they acquire more silvery markings, will spend several years in the ocean, but must return to the stream of their birth to spawn. Colors and patterns vary based on environment, age, and … Other than insects, rainbow trout are known to hunt other water-based life. They are members of the salmon family and, like their salmon cousins, can grow quite large. The rainbow trout (Oncorhynchus mykiss) was first properly identified and named by Europeans in 1792 thanks to the German naturalist Johan Julius Walbaum. As previously mentioned, the rainbow trout is only native to a very specific region of the world. © 2020 The Fact Site | All Rights Reserved | Sitemap, The Fact Site requires you to enable Javascript to browse our website, Fishy Facts About Facebook's Business Fish. The main part of their diet is made up of various aquatic insects, feeding on the larval, pupal, and adult forms. Commercial rainbow trout farming is no small-scale industry either, with 666,592 tons of the fish harvested globally in 2007. Rainbow trout have beautiful coloring. All that said, rainbow trout can now be found all over the world, and are bred specifically for both food and sport. Belly is silver or pearly white in color. Rainbow trout, also called redband trout, are gorgeous fish, with coloring and patterns that vary widely depending on habitat, age, and spawning condition. There are then two types of coastal forms, seven types of redband forms, three types of Kern River golden trout forms, one Mexican form, and then a mutated form called the golden rainbow trout. The eggs then usually take around four to seven weeks to hatch. The female rainbow trout then lays an absolutely insane amount of eggs – up to 3,000 eggs per kilogram that the female weighs! However, they are now considered a non-native pest species in some areas where they have been introduced. Due to their predatory nature and ability to live in almost any condition, they quickly started hunting native species to the point of endangerment. Black cats are well-known for being bad luck. They are also often associated with Halloween, but how did this all start in the first place? Like all trouts, the rainbow trout is part of the same family as salmon, which is called salmonidae. As we’ve established, rainbow trout are so adaptable that they can live in almost all types of water. For most species of rainbow trout this is a relatively simple process, as they tend not to stray far away from home. The practice of farming rainbow trout for commercial practices has been going on since the late 19th Century, beginning in the US. Well, their scales take on a more steel-like sheen due to their life in the ocean. Twenty Terrific Facts About The Number 20, 100 Facts About Cats That You Should Read Right Meow. Dorsal side of the body of adult fish is usually brown, olive green or blue green in color. © 1996-2015 National Geographic Society, © 2015- Technically, they’re actually a sub-species of the rainbow trout. Photograph by Joel Sartore, National Geographic Photo Ark, A rainbow trout photographed at Genoa National Fish Hatchery in Wisconsin, https://www.nationalgeographic.com/animals/fish/r/rainbow-trout.html. Rainbow trout can be found in over 45 countries. These ocean-loving cousins are referred to as steelhead trout, instead of rainbow trout. Their populations are healthy worldwide and they have no special status or protections. There are so many different subspecies of rainbow trout that it’s necessary to separate them into different forms. It was actually an escapee from a nearby fish farm where they genetically modified their trout to increase size and weight. Steelhead trout are born in freshwater, and then will live most of their lives in the ocean. They’re not only good for eating, but can be a great challenge to fish for sport. Why does the black cat get such a bad rap? The fish weighed a whopping 48lbs (22kg), but it was no ordinary rainbow trout. Let's find out. Rainbow trout have been known to eat nearly anything they can lay their jaws on. Let’s head down into the waters as we take a look at these 9 unbelievable facts about urchins. Rainbow Trout will always return to their birthplace when the time comes to spawn their eggs. They’re certainly not picky when it comes to mealtime! Reddish line stretches along the lateral side of the body. Rainbow trout, also called redband trout, are gorgeous fish, with coloring and patterns that vary widely depending on habitat, age, and spawning condition. So why are they called steelhead trout, and not rainbow trout? For other subspecies, like the steelhead trout, this is a serious endeavor! As is always inevitable with such large-scale demand, these fish unfortunately found their ways into the surrounding streams, rivers and waterways. Found across the globe, there are over 200 species of sea urchin and new ones are being found even today. There they dig a small recess, called a redd, in the gravel bed. The Fact Site is the number one source for the most interesting & random facts about animals, celebrities, food, films, games & so much more. 2020 National Geographic Partners, LLC. So why are they found all over the world now? The answer is quite simple: they’re incredibly easy to raise in fish farms, and are very adaptable to many different environments. Let’s take a closer look! Rainbow trout survive on insects, crustaceans, and small fish. So what is it that makes this fishy little guy so popular? You will learn something about everything! Should you see one keep away because if one crosses you, you'll be cursed for life. In 2014 they were listed in the top 100 invasive species in the world. Let’s hope that we can keep better control of them though, otherwise we’ll end up with nothing else but rainbow trout in our waterways! They are also known to eat land-based insects that are unlucky enough to fall into water nearby. 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