At an aquarium I watched a tropical fish have fun with a water jet. It would swim into the jet, get propelled from it across the tank, then swim back, repeating

At an aquarium I watched a tropical fish have fun with a water jet. It would swim into the jet, get propelled from it across the tank, then swim back, repeating as long as I watched it. Part of me felt bad for how bored it must've been living its life in such a tiny habitat. Part of me felt joy that it was indeed having fun doing loops in its waterpark.