can siamese fighting fish live in cold waterThe eggs remain in the male’s care. He carefully keeps them in his bubble nest, ensuring none fall to the underside, repairing the bubble nest as needed. Incubation lasts for 24–36 hours; newly hatched larvae remain in the nest for a better two to three days until their yolk sacs are fully absorbed. Afterwards, the fry leave the nest and the free swimming stage begins. In this first period in their lives, B. splendens fry are absolutely based on their gills; the labyrinth organ, which allows the species to breathe atmospheric oxygen, usually develops at three to six weeks of age, depending on the basic growth rate, that are highly variable.