How do you get the male betta to build a big and sturdy bubble nest so the female will not reject it?

Answer 1

A well conditioned male is a good start. In addition, give him plenty of space (like a 10 gallon), calm water surface and some floating places to build the nest around.

MM

Answer 2

The female does not "reject" the male's nest, the male rejects the female if she is not full of eggs and ready to spawn. If she cannot get away, he may kill her.

To get the male to build a good nest, you must condition him well (the female too) in a separate tank from the female. When you see she is bulging with eggs (usually takes a couple weeks of high protein food 2-3 times a day) float her in a glass jar in his tank. He will immediately start trying to get to her. Shortly he will begin the nest. Once it is large enough (2-3" in diameter and 1/2" high) slowly release her into the tank so you do not mess up his nest. After that, it's up to them. There are various betta breeding sites out there, check them out for the fine points of what to do after they spawn. Or email me, I have spawned them a few times and can tell you what has worked for me.
8

Answer 3

You have to give the male good conditions, meaning good food, clean water, ample space, and a balanced diet (try giving it some frozen bloodworms...). You can't just ask it to build a good nest, trust me, he is trying his best.

Nosoop4u

Answer 4

8 in the corner has it for the most part. Turn off any filters. the water needs to be still for the best spawning.