Goldfish have two sets of paired fins and three sets of single fins. They don't have barbels, sensory organs some fish have that act like taste buds. Nor do they have scales on their heads. They also don't have teeth and instead crush their food in their throats.

Can goldfish bite you?

But there's no need to worry. Goldfish teeth aren't sharp and they can't bite people. They're actually very flat – a bit like human molars – and are used to crush and grind food.

Do goldfish have brains?

You might be please to hear that the answer is yes – goldfish do have brains. ... As you can see, the brain is located at the top of the head, above the fish's eyes, at the front of its spine. And not only do goldfish have brains, they're actually quite intelligent animals.