The goldfish (Carassius auratus) is one of the common pet fish. They’re easy to obtain — almost all pet shops have goldfish — as well as easy to keep. You’d think that there’s nothing more to learn about goldfish as they are almost ubiquitous, but check out these goldfish facts that may surprise and delight you.
Goldfish is one of the earliest domesticated fish, first bred in ancient China. The goldfish emerged as a mutation from carp, which was usually silver, and people had started to keep the gold variety as pets in their ornamental ponds.
The goldfish can have the ability to learn and follow certain behavioral patterns. So that means that you can train your pet goldfish some tricks!
Don’t keep goldfish in the dark, as they don’t like it. So it’s important to put your aquarium lit with ultra-violet and infrared light, as they can see them, unlike their human owners. But make sure they don’t get too much of it!
Through the years, there have been several varieties of goldfish bred by humans. The most popular variety is the common goldfish, and there are fancier varieities like the Black Telescope, the Bubble Eye, the Celestial Eye, Comet, Fantail, Lionhead, Oranda, Pearlscale, Pompom, Ryukin, Shubunkin, Telescope, Ranchu, Panda Telescope, and so many others.
Can it be just the same as “school”? But we hope a troubling in your aquarium won’t get you in trouble!
It’s because they don’t have any eyelids! They do sleep, but with their eyes open.
The reason why goldfish are mostly small because the size of the aquariums have kept them from growing further. But given the right environment, a goldfish can reach over a foot long!
Goldfsh can only fully reach their maturity when they’re given the proper environment and nutrition. Goldfish often mate during springtime.
And that’s amazing! Your pet goldfish can recognize your face, as well as have the ability to distinguish colors, shapes and sounds.
That’s why you should feed your pet goldfish with foods they can easily digest. It is also better to feed them in several small feeding sessions, rather than oodles of food given at once. This is also the reason why your pet goldfish defecate too often, so install a filter in your aquarium to keep the water clean.
Few goldfish even reach half this size. The longest goldfish so far measured 18.7 inches (from snout to tail-fin end), and was discovered in Hapert, Netherlands in 2003.
That is, given the right conditions, a goldfish can live up to 20 to 40 years. However, their usual life span reaches only up to five to six years due to being kept in smaller aquariums.