What color is an American eel?

American eels are typically olive green to brown on their backs and yellowish-white on their bellies. Their color can vary depending on their age, habitat, and diet.

Here are some additional details:

* Young eels (elvers) are transparent and almost colorless.

* Adults tend to be darker and more mottled, with some individuals having a more greenish hue.

* Eels that live in muddy or murky waters may be darker than those in clearer waters.

It's important to note that the American eel's color can change depending on their environment and the time of day.