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BETTAS BUILD BUBBLE NESTS New betta owners are often puzzled to find their new pets creating a layer of tiny bubbles on the surface of the tank's water. This is called a bubble nest, and the behavior is not only normal, but an indication of a happy and healthy betta. In the wild, bettas create bubble nests for mating purposes, and subsequently to protect eggs and newly hatched bettas. Still, the behavior is instinctive, so a betta creates bubble nests even in home tanks without a mate…