Upside-down Catfish

As the common name implies, the Upside-down Catfish usually swims upside down. This unusual behavior is regarded as a feeding strategy. In the wild, it often feeds on the undersides of submerged branches and logs, and swimming upside down makes these areas more accessible.

Splitfin Flashlightfish

The Splitfin Flashlightfish gets its name from its two glowing patches below each eye. The light is caused by bioluminescent bacteria. If starved, the fish slowly loses the ability to emit light.