Can you tell the age of a pufferfish by the size of its spikes?

No, it is not possible to determine the age of a pufferfish by the size of its spikes. The size of the spikes on a pufferfish can vary based on the species, gender, and location of the fish, as well as other factors like diet and water conditions. The spikes on a pufferfish are used for protection and as a warning to potential predators. When the fish inflates, the spikes become more prominent and provide a greater deterrent to predators.

To determine the age of a pufferfish, scientists use a variety of methods including examining otoliths (ear bones), growth rings on scales, and DNA analysis. These methods are used to estimate the age of the fish, but they are not always accurate and can vary depending on the species of pufferfish.