what is the largest freshwater fish in north america?
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catfish grow over 150 pounds
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Red River, big Cat Fish.
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Nope. If you mean by "native", wild trout, the state DNR regularly stocks many Iowa streams. Browns and rainbows and some brookies which, I believe are all "native." There are many streams that have healthy populations of wild (meaning, reproducing) trout, some which grow quite large.
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"Spoonbill Catfish" is another name for the American Paddlefish (Polyodon spathula).\n\nAmerican paddlefish are relatively long-lived, they may live up to 55 years. The average lifespan as estimated in dentary studies seems to be about 20 to 30 years
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African elephantfishes (Family Mormyridae) grow with maximum length of 1.5 m.\n\nThe Australian or New Zealand elephant fish (Callorhinchus milii) species can grow up  to 1.2 m in length.♥
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Lengths of the major rivers\nTake a look at a map of the United States or of any country in the world. Notice how towns and cities tend to be located next to rivers? This is no coincidence. Rivers provide water for the essential needs of both tiny towns and huge cities. There's a good chance that you live near one of our nation's large rivers. Ever wonder what rivers are the longest? Look at the graphic below to see our short list of long rivers.\n\n(It's not so easy to define how long a river is. If a number of tributaries merge to form a larger river, how would you define where the river actually begins? Here, we define river length as the distance to the outflow point from the original headwaters where the name defines the complete length. (Source: Statistical Abstract of the U.S., 1986))\n\nWORLD\n\n Nile: 4,132 miles\n Amazon: 4,000 miles\n Yangtze: 3,915 miles\n\nUNITED STATES\n\n Missouri: 2,540 miles\n Mississippi: 2,340 miles\n Yukon: 1,980 miles\n Rio Grande: 1,900 miles\n St. Lawrence: 1,900 miles\n Arkansas: 1,460 miles\n Colorado: 1,450 miles\n Atchafalaya: 1,420 miles\n Ohio: 1,310 miles\n Red: 1,290 miles\n Brazos: 1,280 miles\n Columbia: 1,240 miles\n Snake: 1,040 miles\n Platte: 990 miles\n Pecos: 926 miles\n Canadian: 906 miles\n Tennessee: 886 miles\n Colorado (of Texas): 862 miles\n North Canadian: 800 miles\n Mobile: 774 miles\n Kansas: 743 miles\n Kuskokwim: 724 miles\n Yellowstone: 692 miles\n Tanana: 659 miles\n Milk: 625 miles\n Quachita: 605 miles\n Hamilton: 600 miles\n Cimarron: 600 miles\n\nThe Yellowstone River is the longest free flowing river in the lower 48 states. Unshackled by dams, the 680-mile river begins its journey in the mountains of northwest Wyoming and extends to meet with the Missouri River in northeastern Montana. Fish, float or simply appreciate this national treasure.\n\nThe Yellowstone River, the longest free-flowing river in The United States, is a world-class blue ribbon trout stream, teaming with trophy-size Cutthroats, Browns and Rainbows. It flows North through Paradise Valley from its source, Yellowstone Lake, in famed Yellowstone National Park
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Daphnia magna.\n\nTry an aquarium shop. They're a popular live food for aquarium fish.
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South America's Amazon River is the world's largest because it carries more water to the sea than any other river. The Amazon's discharge at its mouth is approximately 7 million cubic feet per second.\nThe Amazon is the world's second longest river as well, coming in just a tad shorter than the Nile River at 4,049 miles (6,516 kilometers) long.
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Lake Dixion is one of the best bass fisheries in the world. Spring lake is also great, but Dixion sticks out. The bass in these lakes are HUGE! Use strong rods reels line ect. Big swimbaits, a foot long is normal. Fish them in or around 30 feet of water for sunny days; if its cloudy go to the bank. But if you want to catch a bunch a 6 inch worm is always good.
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i fish for largemouth bass crappie walleyes and white bass largest bass was master angler 12lb 11 0z...largest walleye was 14 lbs largest crappie was 1.25 lbs largest white bass was actually a striper weighed in at 17 lbs what a scrapper he was..i like to follow the gulls when the shad are running..drive my boat up to the gulls and throw in a white spinner blade....the action is fast and furious catching upwards of 100 white bass in a day....Milford lake Kansas
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The Great White Shark (Carcharodon carcharias), also known as White Pointer, White Shark, White Death, or Amaletz, is an exceptionally large lamniform shark found in coastal surface waters in all major oceans. Reaching lengths of about 6 meters (20 feet) and weighing almost 2,000 kilograms (4,000 pounds), the Great White is the world's largest predatory fish. They are the only known surviving species of their genus, Carcharodon. The Great White Shark has a robust large conical-shaped snout. It has almost the same size upper and lower lobes on the tail fin (like most mackerel shark, but unlike most other sharks). It is pale to dark gray and has a white belly.
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BEaver Dam Lake in Cumberland, WI.\nSpooner Lake in Spooner WI has many large pike.\nMiller Dam flowage has many large pike.\nLong Lake in Barron County (just North of Rice Lake) is a great Walleye lake.  Wissota in Chippewaa Falls has some good numbers of Walleye.  The Mississippi would be your best bet for numbers and size.  Try Pools 4 and/or 5.
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Catfish will eat anything they can catch. While fishing on Norris Lake in Tennessee, I personally saw a large cat roll up and take a goose down. The goose never surfaced. While diving on a wreck in the Martins Fork Lake in Kentucky with the rescue squad I saw several cats big enough to drown a man.
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The North American bison (Bison bison) can weigh between 300 and 900 kg (about a ton).  And stand up to 1.87 m at the shoulder.\n\nAn adult polar bear (Ursus maritimus) can weigh between 150 and 800 kg.  Large, but not as large as a big male bison.  They average around 475 kg, and about 1.6 m at the shoulder.\n\nA bull moose (Alces alces) can weigh between 360 and 600 kg.  On average, lower in mass than the polar bear.  However because they have long, rangy legs, they can stand 2.3 m at the shoulder, making them taller than either of the previous critters.\n\nThe Kodiak grizzly (the largest variety of brown bear (Ursus arctos)) averages 389 kg for a male, and one specimen was weighed at a whopping 780 kg.  That's a big bear, but doesn't put it in the realm of the bison, or even the record holding polar bears.\n\nHowever, the largest mammal that actually comes up on land in North America is the walrus (Odobenus rosmarus).  An adult male walrus can weigh up to 1700 kg, and up to about 3 m in length (it's hard to measure their shoulder height though).  It's kind of hard to say if the walrus really counts though, since you are already excluding other marine mammals.\n\nGoing back a little ways in time, a mere 10,000 years ago there were numerous larger critters around in North America.  The Columbian mammoth (Mammuthus colombi) stood more than 3.5 m at the shoulder, and upwards of 9000 kg!!! (That's about twice the mass of the largest modern African elephants).
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a fish that lives in cold water\n\nA\n\n    * Atlantic mackerel\n\nB\n\n    * Bonneville cutthroat trout\n\nC\n\n    * Chum salmon\n    * Coho salmon\n    * Cutthroat trout\n\nG\n\n    * Gila trout\n\n \nL\n\n    * Lahontan cutthroat trout\n    * Longjaw cisco\n\nN\n\n    * Northern Pike\n\nP\n\n    * Pink salmon\n\nR\n\n    * Rainbow trout\n\nS\n\n    * Salmon\n    * Silver trout\n\n \nS cont.\n\n    * Sockeye salmon\n\nT\n\n    * Trout\n\nU\n\n    * Ulcerative dermal necrosis\n\nY\n\n    * Yellowfin cutthroat trout\n    * Yellowstone cutthroat trout
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fav is trout.but i like all kinds of fish.good for the brain
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go to www.dec.state.ny.us/website/dfwmr/fish