How to determine the age of fish?
turns out that there is quite a simple and affordable way to determine the age of fish. All you need to do is fish and microscope. However, you can do without the latter, if accurate data is not needed. So how do you find out how many years the fish? Very simply, it does take a look at her scales and count the number of grooves (rows of scales), which are very clearly visible and do not require additional operations to its owner.
Each row scaly grooves at intervals corresponding to 1 year.
In addition, the age of the fish can be identified by the seals on the dorsal fin, or the size of the otoliths, t. E. The size of the solid structures that are responsible for orientation in space. They say that the otolith size is directly proportional to the age of aquatic life. And there are several other ways.