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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]
“It’s just crazy to see something that, growing up, you go to the fair and you get a little goldfish in a bag. All of a sudden, you’re seeing one 14, 15 inches long,” he said. It’s not ...
The common goldfish usually resembles the wild carp more closely than the comet goldfish. Comets are sometimes said to display a wider variety of colors, but common goldfish also display many of the same types of colors, including red/white, blue, red, orange, yellow, and other two-toned colors like black/orange.
Methods of aggression in fish vary widely by species, but some common examples are chasing, charging, biting, fin display, color changes, and flared gills. [1] Aggression is an important evolutionary pressure that increases an individual's access to resources while reducing overall conflict within the social group. [2]
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Through experimental studies, Allee was able to demonstrate that goldfish have a greater survival rate when there are more individuals within the tank. [2] This led him to conclude that aggregation can improve the survival rate of individuals, and that cooperation may be crucial in the overall evolution of social structure.
Not just for kids: Goldfish is changing its name to "Chilean Sea Bass" for a limited time as a publicity stunt to appeal to adults.
There are also different body shapes, fin, and eye configurations. Some extreme versions of the goldfish live only in aquariums—they are much less hardy than varieties closer to the "wild" original. However, some variations are hardier, such as the Shubunkin. The vast majority of goldfish breeds today originated from China.