Anemone fish not only live in sea anemones, they also provide food for them! Scientists recently observed that these fish provide food for their hosts, ensuring they thrive. This unusual behavior benefits both organisms, as larger anemones mean better protection and more fish offspring.

Anemone fish, also known as clownfish, have long been admired for their bright colors and curious relationship with sea anemones. These fish are known to protect their hosts from predators, but new research finds that they also feed their hosts - providing food that the host cannot eat on its own. This behavior, which scientists have observed in the wild, strengthens the bond between the fish and the anemone, benefiting both parties.

Clownfish (commonly known as "clownfish") have become popular in aquariums since the release of Disney's "Finding Nemo" in 2003. These fish have a unique symbiotic relationship with sea anemones, which provide them with protection from predators. In return, anemonefish protect their hosts by fending off creatures that might prey on them. People have also been observed providing food to sea anemones when humans feed them - but would this behavior occur in the wild?

A research team from Osaka Metropolitan University, led by doctoral student Yuya Kobayashi and professor Satoshi Awata, conducted the investigation. In field experiments, they found that Clark's anemonefish actively provided food for bubble-tip anemones. In some cases, Clark's anemonefish attach clams they can't eat to the anemone's tentacles, and of smaller items, they eat their share first before feeding them to the host.


Anemone fish seem to know what to feed their host anemone for mutual benefit. Image source: Osaka Metropolitan University/Desk

Doctoral student Kobayashi said: "We also confirmed that feeding anemone fish can directly increase the growth rate of anemone. It is known that in other anemone fish species, the number of eggs laid increases when the host size is larger. For anemone fish that cannot leave the anemone, feeding the host is extremely important and will ultimately benefit itself. We believe that a correct understanding of animal behavior will not only promote the development of ecology, biology and other research fields, but also provide appropriate methods for the protection and preservation of endangered animals."

Compiled from /ScitechDaily