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11 largest freshwater fish in the world

By: Bryan Nelson on Oct. 4, 2010, 11:50 a.m.

Photo: By Rostislav Stefanek/Shutterstock

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Not to be confused with the beluga whale, which shares no relation whatsoever to this fish, the beluga is a species of sturgeon that inhabits the rivers and seas of central Eurasia.

Because they continue to grow throughout their lifetime (which can last for 118 years), the beluga might be the world's largest freshwater fish. Some of these monsters have been found that are nearly 30 feet long and weigh over 6,000 pounds — numbers that also put them in contention for being the largest bony fish in the world by mass.