Sea Urchin and Cardinalfish Commensalism

[klausi]

Footage of a cardinalfish - fire urchin commensalism I observed yesterday on Negros Island in the Philippines. It turns out this species of cardinalfish has a light-producing organ, and I am presenting a scientific paper which looked at the type of light-producing bacteria which live in the unusual organ.

 

[GDHLEWIS]

Sweet, had never even heard of such a creature before.