There is a pair of light organs each side of its chin.

As they mature, females develop light organs on the ends of their third arm pairs.

This version had a built in light organ, with an external power supply.

The most characteristic feature of this small fish is the large light organ under each eye.

Their prey is hard to find in the dark, so they have light organs on their belly.

Females additionally have light organs on the ends of their third arm pair.

"It provides the power for the host's light organ."

Pupae of these beetles have different light organs than the adult.

The bacteria cause these cells to die off once the light organ is sufficiently colonised.

Usually these light organs are separate from the tissue containing the bioluminescent bacteria.