How many species of fish are there?
World medium Data from 2024
Guess before you scroll — the answer is below
The answer
36,000 species
Roughly 36K.
Science has described about 36,000 fish species — more than all mammals, birds, reptiles and amphibians combined. Roughly 250 new ones are named every year, and the deep ocean is assumed to hold many thousands nobody has seen.
Where this number comes from
| Source | FishBase |
|---|---|
| Figure refers to | 2024 |
| Last checked | |
| Unit | species |
Numbers move. If this one has drifted from its source, let us know.
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