Meet the Four-Eyed Fish

Within the family Anablepidae, there is a genus Anableps which are known as four-eyed fish. They are found in Central and South America in fresh or brackish waters. These fish are live bearers and interestingly they exhibit a “sidedness”. Males that are left-handed may only mate with females that are right-handed.

Now the fish do not have four eyes exactly, but in both eyes they can see above and below water simultaneously. This is a good super power to have when you spend most of your time on the surface foraging insects.

Photo Credit: Paul Zahl/National Geographic

The retina is specialized so that half receives light from the aquatic environment and the other from the aerial environment. Recent research found that the dorsal and ventral retina have differential gene expression. Click here for a link to the article to learn more.

“Meet the…” is a collaboration between The Finch & Pea and Nature Afield to bring Nature’s amazing creatures into your home.

Advertisements

One response to “Meet the Four-Eyed Fish

  1. Pingback: Friday Coffee Break « Nothing in Biology Makes Sense!

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s