Do Japanese Fighting Fish have teeth?

Yes, Japanese Fighting Fish (Betta splendens) do have teeth. However, they are very small and located in their pharyngeal jaws, which are located in the back of their throat. These teeth are used for crushing and grinding their food, not for biting or tearing.

It's important to note that Betta fish primarily use their mouth suction to draw in food, and then their pharyngeal jaws grind the food before it is swallowed.