Yes, platy fish are smart. In fact, platy fish are considered to be smarter than many other fish.
First, platy fish can recognize their owners. After a while, you’ll notice your platy fish getting excited whenever you walk near their tank. This is because they recognize you, and they’ll also associate your presence with food.
You can also train your platy fish to do various tricks, such as twirling, swimming through hoops, and even jumping out of the water. You can train them by rewarding good behaviors with treats.
However, be careful when teaching them tricks, especially jumping. If you’re not careful, your platy fish might accidentally jump out of the tank and hurt themselves. Also, make sure to clean your hands before reaching into their tank or giving them treats. You wouldn’t want to introduce harmful bacterias into their habitat accidentally.