Is Betta a ray?
No.    Better is "B. splendens," commonly known as the Siamese fighting fish.
the fish are colourful fish they can breathe atmospheric air using labyrinth
No.     Bettas can be territorial fish that live only in water
There are 73 recognized species of the fish
Two males in proximity will almost always attack each other,
They are also refeered to as siamese fighting fish
Sometimes,  Female bettas can also become territorial towards each other