Betta fish, also known as Siamese fighting fish, are one of the most popular ornamental fish in the aquarium world. They have a streamlined, flat body with a rectangular shape, a short snout, a small mouth, and large, expressive eyes. These fish are known for their aggressive nature, especially among males, who often fight fiercely. The fights between male Bettas are not only intense but also visually striking, sometimes even to the point of death. This behavior has made them famous and a favorite among fish enthusiasts.
1. **Physical Characteristics**: One of the most unique traits of Betta fish is their ability to breathe air using a special organ called the labyrinth. This allows them to survive in low-oxygen environments by taking in air from the water's surface. Their dorsal, anal, and caudal fins are long and flowing, while the first rays of their pelvic fins often extend into delicate filaments. Their body coloration is typically light brown with 10 or so blue or green stripes running along the sides. They also have 2-3 dark diagonal markings on the gill cover, and a distinctive blue spot behind the eye. Bettas can thrive in shallow, stagnant waters like ponds and ditches, making them highly adaptable.
2. **Breeding Behavior**: Betta breeding is quite unique and fascinating. The male fish builds a bubble nest at the water's surface using saliva and plant debris. Once the nest is ready, he will court the female, and after spawning, he will guard the eggs inside the nest. However, it's important to remove the female after spawning, as the male may become aggressive toward her. The fry hatch within a few days and require very fine food such as rotifers or finely sieved egg yolk to grow properly. This entire process showcases the remarkable instincts and behaviors of these beautiful and intelligent fish.
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