goldfish

A goldfish is a small freshwater fish often kept as a pet in tanks or ponds. It is well known for its orange or golden color, though it can come in other colors and shapes too, and many people think of it as a common first pet. But its small size can be misleading; to stay healthy, it needs more than a tiny bowl.

The word "goldfish" is also used playfully for someone with a very short memory. This comes from the old myth that these fish remember things for only a few seconds, even though that idea is not true. Because of that, someone might say, "I'm such a goldfish!" after forgetting why they walked into a room.

The goldfish (Carassius auratus) is a domesticated freshwater fish that comes from East Asia. For centuries, people in China bred these fish for bright colors and unusual features, which led to the many kinds we see today, such as fantails, comets, and bubble-eyes. First kept in decorative ponds by wealthy families, goldfish later spread to Europe and the Americas and became popular pets around the world.

While people often picture them swimming in small glass bowls, goldfish do much better in larger tanks with filters that keep the water clean. They are hardy fish and can live for many years, sometimes even more than twenty, if they are cared for well. A healthy goldfish is active, social, and more intelligent than many people assume.

Beyond the aquarium, "goldfish" appears in everyday English in a few familiar ways. To call someone a "goldfish" suggests that they are forgetful, based on the old story that the fish has a very short memory. The phrase "living in a goldfish bowl" describes a situation in which a person feels exposed because other people are always watching their private life. Whether admired for its bright scales or mentioned in a figurative way, the goldfish remains a well-known part of everyday culture.