fish hit the ground with there tails
the male betta fish makes the nest.
fighting fish
Place a female in close proximity where he can see her.
The male will make a bubble nest when the female is about to lay her eggs.
You don't. Your fish should naturally make it when it feels it is ready to breed.
The water.
yes it make a nest. they make a nest like an ant.
To make a nest, eagles typically need large strong trees, they spend a long time throughout the breeding season adding sticks to the nest, building them up for many years. They need a territory close to water to catch fish, though they often nest on the ground when trees are scarce and short.
dolphins do not make nest
Your betta will only make a bubble nest if there is a female present in the tank typically by placing her in a breeder tank available at most local fish stores. Also I would suggest to have some floating plants, and some sort of plants so that the bubble nest can be anchored.
You Let Them Lay Egg In It
they can. but it is VERY rare. usually you would see a bubble nest.