My first Betta alone. His name is Alpha This is the second one. His name is Beta Beta with a buble paper on the surface. Actually placing a buble paper is a trick to make your Betta ready for making buble nest instantly. Flaring to each other Cautionary Notice : Placing two Betta in such a small aquarium with a transparent divider/without a divider may cause a serious problem for Bettas. It is an advice not to mimic the above practice for yourself. I will never suggest you or promote you to do so. All the act was done for training purposes, under the supervision of the trainer.