During the last dives of the University of Caen, an exceptional event was observed: the nesting of a Crenilabra Melops. This local fish built its nest based on algae in the interstices of the dike modules. In the middle of the gap there is also a metal loop, originally mounted to facilitate the maneuverability of the block, which provides an excellent anchor point for the Crenilabra to nest. The females come to deposit the eggs in the nest once they are satisfied with its quality.
We are lucky to have a video of this event, available right here.