Feeding method of red-tailed crested fish
Red-tailed crested fish, scientific name Aequidens Rivulatus, English name Green Terror, was introduced to Hong Kong from South America in 1999, and soon spread to Guangzhou, Tianjin, Beijing and other places in Chinese mainland. It was successfully propagated in China in 2000. In the winter of 2002, in Beijing National Ornamental Fish Exhibition, the red-tailed crested fish cultured in lishuiqiao Tropical Fish Farm in Changping, Beijing won the first place in the medium-sized fish group for its unique beauty. Since then, the red-tailed crested fish has gradually become a "passionate couple" for fish friends from the "cold noodles" in the market.
I. Appearance and habits
Red-tailed crested fish are mainly found in the rivers of Ecuador and Peru in South America, belonging to Lepidoptera. It is a very important edible fish in the country of origin.
Red-tailed crested fish is a wooden stick, covered with metallic orchids. Its head and forehead are dark red, its cheeks are covered with several blue-green arcs on a dark red background, its dorsal fin has orange edges, and the metallic orchids on its pectoral fin and gluteal fin have milky highlights. The netted black phosphorus blocks are neatly attached to the metal orchid, and the prominent red tail is in sharp contrast with the whole metal orchid, which is extremely bright and magnificent under the light, even comparable to the colorful fairy king of tropical fish.
The larvae of red-tailed crested fish are very similar to those of two or three months old sapphire fish, but careful identification shows that the larvae of red-tailed crested fish are dark gray with faint red edges on the tail and dorsal fin, while the larvae of sapphire fish are light gray.
The body length of the red-tailed crested fish can reach 13 ~ 25 cm. When the environment changes, it is easy to jump from the dark environment to the bright environment; It is more stable.
Red-tailed crested fish is a kind of bottom fish with strong regional characteristics. Usually used to gather and play in places such as small bridges and rockeries. There is a struggle between males of the same species, and it is best to raise big fish when interbreeding. Mixed culture swims among other fish, can live in peace with other fish, and has a relatively gentle personality.
Second, feeding
Red-tailed crested fish is a large cichlid, and the aquarium needs at least 90cm× 40cm× 40cm. The feeding water temperature is 20 ~ 28℃, and the most suitable domestic water temperature is 27℃. The requirements for water quality are not strict, and it can grow and develop normally in weak acid to weak alkaline soft and hard water. The author has done experiments. During feeding, the water is weakly alkaline and moderately hard. When the fish is put into weak acidic soft water during breeding, there is no big reaction, and the spawning and embryo development are normal. Later, young fish were raised in weak acidic soft water. When the fish was older, the water turned into weak alkaline hard water, but there was no adverse reaction in the color and surface of the fish.
Red-tailed crested fish is a carnivorous fish, and likes eat small fish, shrimp, breadworms and so on. Can also be fed with homemade animal bait. In order to keep the fish colorful, first, we must ensure sufficient light, and the strong light irradiation is not less than 8 hours every day; The second is to put green algae bait, appropriately increase shrimp and carotene, and feed them once every morning and evening.
Red-tailed crested fish are easy to raise and strong, but individual fish are easily scratched by decorations. It is best to sprinkle some salt regularly when raising to prevent fish from getting water mold.
Third, male and female identification.
Red-tailed crested fish is hard to tell male from female. The young fish grow to about 10 month, and the accessibility is mature. The body color of male fish is brighter than that of female fish, the ends of dorsal fin and anal fin are long and bright, and the anal process of female fish is longer and rounder than that of male fish. In the same nest of fish, females are usually smaller than males.