Arowana, Halichoeres chrysus, is a species of fish in the genus Hydra in the family Dipteraceae. Distributed in the coral reefs of the western Pacific Ocean, carnivorous, can feed animal bait and artificial feed, suitable for water temperature of 26 degrees, sea water specific gravity of 1.020, water volume of more than 100 liters of aquarium tank, the maximum body length of up to 10 cm.
Artificial environment
The most we raise in this family of fish is the "fluttering" fish, this fish is very active, cylindrical body in the water to drill around, like to peck at other fish, many introductions say that "fluttering" fish in pecking at other fish parasites, so it is also called "doctor fish". I have a different point of view, to our perennial observation, in the aquarium with "fluttering" fish, the pecked fish are not peaceful, on the contrary, it seems very uncomfortable, and "fluttering" also takes the weakest fish in the tank as the target of siege, in general, in nature, whether terrestrial or marine, as long as there are symbiotic or mutually beneficial populations, each other is friendly coexistence.
Mating and childbirth
After nesting, the males begin to chase the females. At this time, the body color of broodstock, especially males, changes rapidly, often changing from bright blue to dark green in a few seconds. If you are artificially alarmed, you will immediately return to the usual blue tone. The male will spasm all over the body at this time, courting the female in various dance postures, luring the female into the foam nest, and performing the production work together, the male bends his body to embrace the female, the male and female body is bent into a "C" shape, the male touches the female's abdomen with his head, and after several fierce hugs and rolls, the female excites the eggs into the floating nest, and the male immediately ejaculates and fertilizes the eggs. The fertilized eggs are white and transparent, and the granules are suspended in the foam fish nest. The female and male repeat this rolling spawning motion several times (7 to 10 times) for about 1 to 2 hours before the female can empty all the eggs.
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