Comet Goldfish Overview

The Comet Goldfish is an attractive little fish with a single fork-shaped tailfin, unlike many of its cousins. Because of the unique tail, they were named after a comet in space. They aren’t as large as others, either—but they can get up to roughly 12 inches.

Why are comet goldfish so cheap?

They’re mainly so cheap because they’re mass bred as feeder fish. If you don’t want to have a large tank or pond in the near future, I would recommend returning them to the store as soon as possible. Comet/Common goldfish are indeed sold pretty darn cheap.

How fast does comet goldfish grow?

Comet Goldfish Growth Rate

During their first few weeks you can expect your Comet to grow up to 50% each week. It will take them around 3-4 years to reach their full size.

Do comet goldfish get lonely?

Do goldfish get lonely if kept in a tank by themselves? You might be surprised to learn that, no, they don’t. At least, not as far as we know. Based on everything we know about goldfish, it is very unlikely that goldfish feel loneliness.

How long do comet goldfish live?

Due to the comet’s hardy and active nature, and the relative ease in caring for them, they are the breed best suited to ponds and outdoor pools. They are often kept with koi in outdoor ponds. Comets have a natural life span of 5 to 14 years and may live even longer in optimal conditions.

How many comets are in a 10 gallon goldfish?

As for the question about a 10-gallon tank, it is only suitable for one or two baby goldfish. As soon as they start outgrowing the tank, you will need to consider at least 20 gallons of space for every other fish.

Can you mix comet and fancy goldfish?

Common goldfish, comets, and shubunkins cannot be kept with fancy goldfish. Additionally, some types of fancy goldfish such as orandas, black moors, and fantails shouldn’t be kept with other fancy types like ranchus.

Are goldfish happier in pairs?

Keeping at least two goldfish in an aquarium is recommended to provide companionship and promote activity. Solitary fish can exhibit depression and lethargy. Goldfish are generally not aggressive so they can be kept with most community fish provided the other fish are larger than the size of the goldfish’s mouth.

Is a comet goldfish a feeder fish?

Feeder Goldfish are young Comet Goldfish commonly available for outdoor ponds. They are usually about 1-1.5″ at the time of purchase and are typically the largest “feeder fish” available. They are suitable as supplemental prey items for larger predatory fish or reptiles.

Do comet goldfish need a filter?

Good filtration is important as well.

These fish produce a lot of waste, so you’re going to need to invest in a filter that’s powerful enough to keep ammonia levels low.

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.

How can you tell a goldfish’s age?

The scales are made up of concentric rings which are formed closer together during cold weather when there is little fish growth, and further apart in warm conditions when the goldfish are growing more quickly. By counting the bands of closely spaced rings, the age of the fish can be determined.

How many comets are in a 20 gallon goldfish?

The general rule of thumb is 1 gallon of water per 1 inch of fish. This means a 20-gallon tank is big enough to house 20 small goldfish. It is important for the health and wellbeing of your goldfish that you provide them with adequate space to swim freely.

Do goldfish recognize 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.

How do I know if my goldfish is happy?

Your fish are happy and healthy when they:
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.Eat regularly and swim to the surface quickly at feeding time.

Do goldfish need complete darkness to sleep?

Goldfish need at least 8 to 12 hours of complete darkness to sleep, and anything less will start to show negative effects on their health over time.