What is the biggest fish in the world?
The whale shark is the biggest fish in the world: about 40 tons36 tonnes1. The biggest fish alive is a gentle shark that eats tiny food.
Next on Peabody, among the animals with a checked number we can show: the giant manta ray, at about 2.6 tons2.4 tonnes2.
Drawn to scale, next to you
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Where the numbers come from
- NOAA National Ocean Service, checked 30 October 2026.
- NOAA Fisheries, checked 30 October 2026.