Damselfish in Distress Call Their Enemies
Defenceless fish provokes predators to fight over it to escape.
But a new study by Dr. Oona Lonnstedt, from the Department of Ecology and Genetics at Uppsala University in Sweden, has found that young damselfish deploy an innovative defence mechanism, when they are in the jaws of a predator.
They release a chemical into the water that attracts many other predators. In the ensuing frenzy over a potential meal, the captured damselfish is often able to escape to the shelter of the reef. In fact, the damsel's chemical escape plan has a 40-percent success rate.