Is my goldfish a boy or girl?

To identify a female goldfish, look for a rounder, thicker body shape. Females may also have a bulge on one side as breeding season approaches, and their vent, or anal opening, may protrude slightly. Male goldfish often have a thinner, more streamlined body shape than females, with a concave vent and a midline ridge.
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How do I tell if my goldfish is male or female?

The anal fin in males is closer to the tail compared to females. Male goldfish tend to have more flowing fins and tails compared to females. Male goldfish tend to have a slightly smaller and skinnier body compared to females. Females will have a larger and rounder body and their abdomen can appear soft.
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Are my fish boys or girls?

You can determine the sex of your fish by inspecting its gonads (reproductive organs), which are located towards the top of the gut cavity. Mature female fish will have orange ovaries and male fish will have white testes (see photos above).
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Can goldfish have babies?

How many babies do goldfish have? A goldfish can lay anywhere from a few hundred up to 1,000 eggs at a time. However, some of these eggs do not get fertilized, some do not develop, and others may not hatch.
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Can a goldfish change gender?

Although some fish can change sex, goldfish are not among those. Sex is fixed prior to birth. You are absolutely correct: at breeding time mature male goldfish will develop breeding tubercles that appear as white bumps on the gill covers (opercula) and the rays of their pectoral fins.
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5 Way To Identify Male Or Female Goldfish



Is it OK to have just one goldfish?

Goldfish (Carassius auratus) are social animals and when kept in groups can be seen regularly interacting with other goldfish. Keeping at least two goldfish in an aquarium is recommended to provide companionship and promote activity. Solitary fish can exhibit depression and lethargy.
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Why are my goldfish chasing each other?

If your goldfish are chasing each other around the tank, this is sometimes the lead up to mating and generally not cause for concern. What is this? However, if your tank is overcrowded or your fish are in competition over food, your goldfish may become stressed and chase each other off in competition for resources.
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How do I know my goldfish is happy?

Your fish are happy and healthy when they:
  1. Swim actively throughout the entire tank, not just hanging out or laying at the bottom, floating near the top or hiding behind plants and ornaments.
  2. Eat regularly and swim to the surface quickly at feeding time.
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What do goldfish do all day?

First of all, it's normal to see your goldfish swim, play and explore during the day and sleep at night. Do fish sleep? Yes, but because they have no eyelids, they can't close their eyes like we do. The goldfish behavior can be influenced by the environment, tank mates and also by its owner.
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Why are my goldfish turning black?

Ammonia changes are, by far, the most common reason why goldfish turn black. Generally, the color change starts on the fins. Over time, it can get progressively worse and spread to the body. There, it'll appear as small batches of black skin that look burnt.
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How do you cheer up a goldfish?

Make the tank interesting

Goldfish spend lots of time exploring their tanks to entertain themselves, so set up your tank in such a way as to provide lots of stimulus for your fish. Gravel, plants, ornaments and airflows can all make life interesting for your fish.
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What size tank do I need for 2 goldfish?

Based on the rules above, the goldfish tank size we recommend for two goldfish is: 42 gallons for two Common goldfish. That's 30 gallons for the first fish and 12 additional gallons for the second fish.
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Do goldfish get sad?

According to researchers, fish can get depressed, too, and studies are being done on the aquatic animals in an effort to find treatments for humans suffering from the disorder. You might be wondering what people could possibly have in common with fish, but experts say there's more than you think.
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Do fish see humans?

Summary: A species of tropical fish has been shown to be able to distinguish between human faces. It is the first time fish have demonstrated this ability. A species of tropical fish has been shown to be able to distinguish between human faces.
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How long are goldfish pregnant?

Hatching Time

After release and fertilization, goldfish eggs hatch in two to seven days. In water at 84 degrees Fahrenheit, fertilized goldfish eggs hatch in 46 to 54 hours; in water at 70 to 75 degrees Fahrenheit, they hatch in five to seven days.
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What do goldfish like to play with?

Creating a Playful Environment. Use large and smooth gravel stones. Goldfish love to swim around the bottom of the tank. Because of this, you need to make sure your stones are large so that they cannot be swallowed.
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How big is a 1 year old goldfish?

Your goldfish will reach about 2 inches in 6 months. As long as it has adequate nutritional support, it'll reach over 3 inches by the end of its first year.
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Do goldfish need plants in their tank?

It is not necessary for Goldfish to have plants in their aquarium but plants are good for not only Goldfish but any fish because it helps to create a healthy environment in the aquarium by reducing stress, ammonia, and carbon dioxide levels in the aquarium. Some fish like Goldfish like to snake on plants.
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Does putting a fish in the freezer revive it?

Certain species of fish do survive in frozen or near-freezing temperatures, during what is called an “overwinter” by the NOAA. They will go dormant, often burrowing into sand or hovering in large groups, and “revive” when the water warms up or thaws.
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Is it cruel to keep fish as pets?

According to experts, keeping fish in bowls is inhuman for several reasons. Low surface to air ratio, no filters to clean the water and cramped space for the fish are some. Many cities across the world have banned fishbowls altogether.
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Do goldfish know their owners?

Pet goldfish can distinguish between humans, and often recognise the human that regularly feeds them. Pet goldfish can also seem quite scared of new people, but become more comfortable with their owners over time as they realise they aren't a threat.
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How often should you change goldfish water?

A goldfish bowl without a filter should be cleaned twice a week. With a filter you can clean it every 7-10 days. How do I clean my bowl? Remove 1/3 of the water and put it in a different container.
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How often should I feed my goldfish?

Feed 2-3 times daily. It is important to avoid overfeeding goldfish as this can cause indigestion and/or contaminate the tank. In terms of the amount to feed, a good rule of thumb is to only feed an amount that the goldfish can consume in under two minutes or only feed as much as the size of the goldfish's eye.
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Why is my goldfish swimming upside down?

If your fish is swimming upside down, it has a problem with its swim bladder. What is this? Your fish has stopped being able to control its swim bladder and has got stuck with too much air inside it. The reason for this could be constipation, a poor diet, eating habits, or an infection.
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