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Was megalodon the largest fish known to have lived?

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Illustration of a female megalodon shark (Carcharocles megalodon) with a faint human scuba diver silhouette in the background for scale, highlighting the shark's massive size. Measurement bars at the bottom show 3 meters and 9 feet for reference. — megalodon Megalodon (*Carcharocles megalodon*) was a species of shark that lived during the Miocene and Pliocene epochs (23.03 million to 2.58 million years ago).

Yes, the megalodon is recognized as the largest fish known to have lived.12

Scientific estimates, based on the analysis of its fossil teeth and comparisons to modern relatives, suggest that mature adult megalodons typically reached lengths of 13 to 14 meters (about 43 to 46 feet). Some estimates for the largest specimens suggest they may have measured up to 24.3 meters (nearly 80 feet) in length and weighed as much as 94 tonnes.2

As an apex predator that lived during the Miocene Epoch, the megalodon was significantly larger than any shark found in the ocean today. Its size and predatory nature allowed it to feed on a variety of marine life, including whales and dolphins.1