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The goldfish (Carassius auratus) is a freshwater fish in the family Cyprinidae of order Cypriniformes. It is commonly kept as a pet in indoor aquariums, and is one of the most popular aquarium fish. Goldfish released into the wild have become an invasive pest in parts of North America and Australia. [4] [5]
Goldfish. Goldfish, like all cyprinids, are egg-layers. They usually start breeding after a significant temperature change, often in spring. Males chase females, prompting them to release their eggs by bumping and nudging them. As the female goldfish spawns her eggs, the male goldfish stays close behind fertilizing them.
The common goldfish are often confused with comet goldfish, a distinct breed. The two breeds are often mixed together at many pet stores and aquarium stores. They breeds differ in the relative size of the body and fins. The comet goldfish has longer fins but a shorter and slender body size, and thus resembles tracing comets. The most ...
Assorted goldfish. This is a list of goldfish varieties and their characteristics. Currently, there are about 200 breeds of goldfish recognized in China. [1] Selective breeding over centuries has produced several color variations, some of them far removed from the "golden" color of the original fish. There are also different body shapes, fin ...
They usually start breeding after a significant temperature change, often in spring. Males chase females, prompting them to release their eggs by bumping and nudging them. As the female goldfish spawns her eggs, the male goldfish stays close behind fertilizing them. Their eggs are adhesive and attach to aquatic vegetation.
If male pipefish and seahorses provide only a simple pouch for fish eggs to develop and hatch, it might not fully qualify as bona-fide pregnancy. However, current research suggests that in syngnathid species with well developed brood pouches, males do provide nutrients, osmoregulation and oxygenation to the embryos they carry. [44]
Some troops leave the battlefield injured. Others return from war with mental wounds. Yet many of the 2 million Iraq and Afghanistan veterans suffer from a condition the Defense Department refuses to acknowledge: Moral injury.
Bubble Eyes have metallic scales, and they are similar to the celestial eye goldfish. [3] The eyes of the Bubble Eye goldfish are normal in the young fry but will start to develop eye bladders three months after hatching. [3] Like ranchu, the bubble eye goldfish lacks a dorsal fin and has a double tail. [4]