The fantail goldfish is a fancy goldfish, but it has more in common with non-fancy varieties. It can survive and compete successfully alongside common, comet and shubunkin goldfish in ponds and aquariums. It is also easy to breed, and an ideal fancy goldfish for beginners.
Aquatic snails come in all shapes, sizes and colours. Their individual attractiveness is a matter of taste, but they certainly give an aquarium a more natural look, and perform some very useful functions to boot. Unfortunately, there are also some pitfalls that need to be avoided when keeping snails in a goldfish tank.
More proof (if proof was needed) that goldfish are not 3-second memory organisms that don’t know how to have fun!
Goldfish use a simple but efficient and interesting method of absorbing nutrients from their food. They have no glands, valves, or two sizes of intestine. Most unusual of all – even among fish – they have no stomach. Most surprising of all, they have a set of teeth to get the digestion ball rolling.