4 Best Goldfish Tank Mates

One of the Best Goldfish Tank Mates. They are friendly, interactive, and robust enough to withstand a lot of beginner’s mistakes. However, once you’ve mastered their care, maybe your goldfish could be a good friend. The biggest hurdle is choosing fish that don’t require tropical temperatures, have easy-going personalities, and can sustain themselves while feeding.

Goldfish are generally fine on their own

Some goldfish just don’t like having any business. Especially for fish that have been on their own for over a year, adding a new tank mate can be a frightening and intimidating ordeal, resulting in aggressive or intimidating behavior. This behavior can appear as a feeling of pinching, aggressive swimming, and restricted access to food at mealtime.

Goldfish are fine to be on their own. They enjoy interacting with their caregivers and don’t suffer from a lack of companionship. “Child-only” goldfish may benefit from additional interactions with multiple family members or from the decoration of their tank. You can even train them to do tricks!

What is The Best Goldfish Tank Mates

However, goldfish work well with a few other species of fish and can benefit society. Here are some of the best options for goldfish tank buddies:

Another goldfish (Carassius auratus)

Goldfish like to swim with other goldfish (without a profile). Standard comet goldfish should be kept with other comets with fancy goldfish (no profile) kept with other fancy. Fancy goldfish lack the mobility and maneuvers which can be a problem while feeding. Comet, Sarasa, and Shubunkin varieties have similar body types, but different coloring if you are interested in the variation.

The comet goldfish, although it starts out small and cute, can grow to the size of a plate (12 “) if kept in the right conditions. Try to limit the size of your fish by keeping them in a small tank or restricting their diet Healthy goldfish thrive with plenty of room to swim. So, regardless of the type of goldfish, you will need at least 20 gallons. per fish .

All goldfish should follow a granulated diet specific to goldfish. To combat overfeeding on the surface resulting in a positive buoyancy disorder, it is best to keep most fancy varieties on a sinking pellet. If you have overly competitive fish in the same tank, try spreading the diet over the entire area of ​​the tank or mix floating and sinking pellets.

Zebrafish (Danio rerio)

Zebrafish are peaceful little fish that enjoy swimming in groups. They can start at around an inch in length and maximum at almost two inches, making them noticeably smaller than most types of goldfish. Due to their different size, they can be combined with both comical and fancy varieties of goldfish.

They come in a variety of colors and fin lengths. Make sure to start with a size larger than your goldfish’s mouth! Even if they don’t intentionally consume them, if a fish accidentally gets in the way while eating, they will be swallowed.

Zebrafish are generally too small to eat goldfish pellets. While you may be tempted to use flakes, smaller tropical fish pellets are best. Flakes lose too many nutrients too quickly due to a high surface-to-mass ratio. By varying the diet of your aquarium, you will limit competition between species.

Ornamental Minnows

There are many varieties of minnows that are suitable for ornamental ponds. Cousins ​​of the zebrafish, they taste the same when it comes to food and care. Much like zebrafish, they like to swim in groups, so you may need to start with three or more. They are similar in size to the zebrafish when they reach their maximum size.


Fish should never be taken from the wild and kept in man-made systems, especially if you add them to a tank already containing fish! Wild fish tend to have a lot of bacteria and parasites that can quickly pass to other fish.

Some of the more common varieties include red clouds and pinkish white. Different varieties have their own standard colors, but the care is the same.

Nerite snail (Neritina sp.)

Unfortunately, non-tropical freshwater ornamental species are limited, but you can also consider invertebrates, such as the Nerite snail. These tedious cleaners can help you keep your tank clean by munching on trash and algae.

These snails can grow to an inch and come in a variety of shell colors. Most fish usually leave them alone unless the snail stumbles upon a tasty treat that a goldfish wants. Worst case scenario, the snail is thrown and has to go get another snack.

Overpopulation is the number one concern with the snails in your aquarium. Happy and healthy snails will reproduce very quickly. Hermaphrodites, they don’t need help! Limiting snails’ food sources, such as excess food and algae, will limit your population.

Keep in mind that any new tank additions should be quarantined for four to six weeks in a separate tank with separate equipment. This will prevent any new bacteria and parasites from entering your tank.

Make sure to monitor your new additions once they’re added to the new tank to make sure everyone is getting along. Not all goldfish like to have friends. If your goldfish is choking or chasing new additions, try adding a few more hiding places so everyone can have their own space.

Always assess the size of your tank before adding more fish. Goldfish need 20 gallons minimum! Stopping them in a smaller tank will only harm their immune function. If you are having trouble accommodating your current fish, you should not add any.

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