A goldfish swimming upside down in an aquarium is widely consider to have a problem with its swim bladder. This is almost never the case. The real reason is gas that has inflated the intestinal tract. I’ll explain. Goldfish do not have a stomach – yes, that’s right no stomach where food is traditionally digested. …
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About Dr. Tim
Yes, there really is a Dr. Tim. It all started with 2 goldfish won at a school fair at age 6 that didn’t survive their first night in his care. DrTim’s gotten better at fish keeping since then! Read Our Story.