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Goldfish FAQs

What kinds of goldfish are there?

There are numerous varieties of goldfish with biggest differences in coloring, tail size or number, and body shape. There is the Common goldfish, which most people typically picture. Some examples of other types of goldfish include: The Fantail goldfish, which has a double fan-shaped tail and can come in a variety of colors; the Ryukin, which is recognized by its humped back, deep belly, and pointed head; the Oranda goldfish, which stands out because of its wen, or a bright red headgrowth; and the Bubble Eye goldfish, which have fluid-filled sacks near their eyes giving a large-eyed look.

How big can goldfish get?

Often, goldfish have stunted growth because they are kept in tanks that are too small and therefore accommodate for the size. However, if provided enough food and enough room, a goldfish can grow to be over a foot long!

What do goldfish eat?

Similar to other fish, goldfish are classified as “opportunistic eaters,” meaning that they will not stop eating on their own and so must be allocated a certain amount of food each day. In the wild, the diet of a goldfish consists of plant matter, insects, and crustaceans. In comparison to other fish food, goldfish food consists of higher carbohydrate and lower protein content. Stop by Pet World and talk to one of your experts today.

How old to goldfish live to be?

When kept in tanks of a proper size with water conditions optimally maintained, goldfish can live to be over 40 years old! The longevity of goldfish make them great pets as they can remain companions for such a long period of time. You can tell how old a goldfish is by looking closely at the rings on its scales.

How should I acclimate my new goldfish to its new home?

Keep your tank light off and float your new goldfish in it’s travel bag in the tank water for about twenty minutes so that it can adjust to the new temperature. Do not just dump the whole travel bag of water into your tank, but rather scoop your goldfish out of the bag and transfer it into the tank this way. Then discard the water from the bag. Allow your goldfish to swim around in its new environment for a while before turning the tank light on. At this point it is normal for your fish to hide behind any structures or plants you might have in the tank, as it gets used to its new home.

Importantly, if you are taking home multiple goldfish, do not add them all into the tank at one time. Goldfish create ammonia naturally that gets filtered and cycled by the tank as time goes on. If you add multiple goldfish into a tank at one time, the water doesn’t have the time to adjust and process the increase in ammonia and could prove harmful to your new pet.

How often should I change the water for my goldfish?

Making sure that you regularly change the water for your goldfish is crucial. The process of water changing clears the tank water of any pollutants that naturally build up. The most common toxin that could accumulate is ammonia. You want to make sure that you regularly test the ammonia levels in the tank and regularly change the water to avoid accumulation. The water in your goldfish’s tank should be changed once a week. It is recommended that you change about 50% of the water in your goldfish tank at a time. You do not want to completely dumb all the water, as you would be eliminating some of the good bacteria that builds up and protects your goldfish.

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