Coded wire tag

Okay kiddo, have you ever played a game of hide and seek and you left a clue for your friends to find you? Well, imagine if we were trying to find fish in the water and we left them a clue too!

That's where a coded wire tag comes in. It's like a tiny secret code that scientists put inside the fish. It helps them keep track of where the fish came from, how old it is, and a bunch of other cool stuff!

When the fish is caught, the code is revealed by cutting out a small piece of wire from the fish's head. Scientists can then look at the code and figure out where the fish was born, where it went, and where it was caught.

This helps scientists understand more about how fish move around in the water and how we can keep them healthy for a long time. So next time you eat fish, remember that it might have a secret code inside!