The Lost Clownfish

 

There are a number of problems which can arise as a result of Ocean Acidification - neurological problems in fish, are one of them.
 
Scientists have discovered that a lower pH can also affect neurological problems. A study showed that some young clownfish have lost the ability to navigate home because of changes to their sense of smell. This is because the fish can be attracted to smells they’d otherwise avoid, leading them to predators or leading them far away from their home. Scientists believe that the reason behind this is because of changes in a neurotransmitter in higher carbon dioxide levels. They also found that this might be reversible with the addition of a chemical. Although adding chemicals could be very costly, particularly as it would need extensive testing to make sure it wouldn’t harm other species. 

Finding Nemo....

.... or a clownfish! :)

The clown fish (also called anemone fish) are actually more or less all identical but they have subtle differences in shape and live in different habitats. Of all the fish, they're probably the most recognizable, mainly for the obvious movie connections! Before they take up residence, they perform a dance with another fish, gently touching the other fish until they become acclimatized to the nearby fish. They also have a layer of mucus on their skin to make it immune from the anemone's sting. As far as fish are concerned they can live for a surprisingly long time - up to 10 years in the wild!

Weirdly, all clown fish are born male and have an ability to change sex, although just to become the dominant female. However they can't switch back.