Male damselfish (Chromis chromis) have small territories in the rocks and entice females to lay their eggs in them.
Where to find them?
In the Mediterranean habitat of the aquarium.
Once females have laid the eggs, they are fertilised and actively defended until they hatch.
They usually live at depths of between 3 and 35 metres and measure 15cm.
Did you know...?
Young damselfish are a bright blue colour.