Tuesday, November 9, 2010

Siamese Fighting Fish

Siamese fighting fish are extremely aggressive toward each other. When males are placed together their colors deepen, and they spread their fins and gill covers, move side by side, and then attack - biting each others first, gills, eyes and skin.

 Siamese fighting fish, Betta splendens (family Anabantidae), commonly called bettas, are native to waters of the Malaysian peninsula and Thailand. They have been cultured for many years, particularly in Thailand (Siam), where the aggressive male and pitted against it others and bets are placed. In wild fish and in fish bred for fighting, the fins are short. In European breeding, however, the original yellowish brown, faintly banded males were developed into variety of long finned, brightly hued individuals.

Siamese fighting fish have a complex courtship. The male first builds a nest of bubbles near the surface, each bubbles being coated with mucus from his mouth. He then court the female, gathers her eggs in his mouth, place them in the nest, and guards and cares for the eggs and the newly hatched fry.

The betta is on of the labyrinth fishes, so called because of the presence of labyrinths of folded tissue in two chambers in the gill cavity; these labyrinths can absorb oxygen from air. Air breathing become requirement some weeks after hetching, and bettas denied accesss to surface air will drown.

Other kind of fishes:

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