Rosy Red Minnow Care


The Rosy Red Minnow is a small, freshwater fish that is popular among aquarists and fishkeepers. The fish is native to North America, and is found in streams, ponds, and lakes. The Rosy Red Minnow is a hardy fish that is easy to care for, and is a good choice for beginners. 

The fish is omnivorous, and will eat a variety of foods, including live, frozen, and flake foods. The Rosy Red Minnow is a peaceful fish that can be kept with other peaceful fish. The fish is not aggressive, and is not known to bother other fish. The Rosy Red Minnow is a popular fish, and is available in pet stores and online.

Looking to add some color to your aquarium? Rosy red minnows are a great option! These little fish are easy to care for and make a beautiful addition to any freshwater tank. Here are a few tips on how to keep your rosy red minnows healthy and happy: 

With just a little bit of care, your rosy red minnows will thrive in your aquarium!


Rosy Red Minnow Care Tips in Brief

  • Provide plenty of hiding places. Rosy red minnows like to have plenty of places to hide, so be sure to add some rocks or plants to your tank. 
  • Keep the water clean. Like all fish, rosy red minnows need clean water to stay healthy.
  • Be sure to perform regular water changes and keep an eye on your water quality. 


The lifespan of a Rosy Red Minnow is typically between 2-5 years, although some have been known to live up to 10 years. They are a hardy fish and can withstand a wide range of water conditions, but prefer cooler water temperatures.


The Rosy Red Minnow is a small, colorful fish that is popular in home aquariums. They are easily identified by their red coloration and black spots. Rosy Red Minnows are typically between 1 and 2 inches in length.

While their small size and vibrant colors make them a popular choice for aquariums, it’s important to remember that they are still wild animals. In the wild, Rosy Red Minnows live in schools and are constantly on the move. As a result, they are not used to being in close quarters with other fish and can become stressed in an aquarium environment.

When choosing Rosy Red Minnows for your aquarium, it’s important to look for fish that are healthy and have bright colors. Avoid fish that appear to be sick or have dull colors. Also, be sure to purchase your fish from a reputable dealer to ensure that you are getting healthy fish.

When it comes to Rosy Red Minnows, size definitely matters! These little fish are only able to grow to a maximum size of around 2 inches, so they need to be kept in an appropriately sized tank.

While you might be tempted to put them in a larger tank so they have more room to swim around, it’s actually not good for their health. A larger tank can cause stress and even death in these small fish, so it’s important to make sure they have plenty of space in a tank that’s sized just right for them.

Tank Size

As you might expect, rosy red minnows do best in a tank that is at least 10 gallons. But, if you have the space, a 20 gallon tank is even better. Keep in mind that these fish will grow to be about 3 inches long, so you need to give them enough room to swim and explore.


Rosy red minnows are very tolerant of a wide range of water conditions, which makes them ideal for beginner aquarists. However, there are a few things to keep in mind in terms of water parameters.

Temperature: Rosy red minnows can tolerate a wide range of temperatures, from around 60 degrees Fahrenheit to 80 degrees Fahrenheit.


pH: Rosy red minnows prefer neutral to slightly alkaline water, with a pH of around 7.0.

Hardness: Rosy red minnows are tolerant of both soft and hard water, although they prefer water that is on the harder side. A hardness of around 10-20 dGH is ideal.

Ammonia and Nitrite: Ammonia and nitrite levels should be kept at zero in any aquarium, and this is especially true for rosy red minnows, as they are very sensitive to these toxins.

Nitrate: Nitrate levels should be kept as low as possible in any aquarium, and rosy red minnows are no exception. Aim for a nitrate level of 20 ppm or less.

Disease Potential

While the vast majority of captive-bred and properly cared for rosy red minnows are healthy, there are a few potential diseases to be aware of. The most common of these is columnaris, which is caused by the bacterium Flavobacterium columnare. This disease can cause lesions, fin rot, and death in affected fish, and is often mistaken for other common diseases like fin rot or velvet.

Other potential diseases include bacterial gill disease, viral hemorrhagic septicemia (VHS), and white spot disease. While these diseases are not as common as columnaris, they can still be deadly to rosy red minnows if left untreated. If you notice any unusual symptoms in your fish, it is important to consult a veterinarian or fish health expert as soon as possible to get a proper diagnosis and treatment plan.

Food & Diet For Rosy Red Minnow

A diet rich in live and frozen foods is essential for the health of your Rosy Red Minnow. Live foods such as brine shrimp, daphnia, and bloodworms are excellent choices, and frozen foods such as krill and mysis shrimp are also excellent choices. A good quality flake food or pellet food can be used as well, but should be supplemented with live and frozen foods for best results.

Behavior & Temperament

Rosy red minnows are peaceful fish that do well in community tanks. They are active and playful, and make a great addition to any aquarium.

Rosy red minnows are not aggressive, and get along well with other fish. They are active fish, and love to swim and play. They are a great addition to any community tank, and make great tank mates for other peaceful fish.

Tank Mates

Rosy red minnows are peaceful fish that do well with a variety of tank mates. Good choices include other peaceful community fish such as guppies, platies, and Swordtails. These fish all prefer similar water conditions and temperature ranges, so they make a good match for the rosy red minnow.


If you’re interested in breeding Rosy Red Minnows, there are a few things you’ll need to know. First, you’ll need to purchase a breeding pair. These can be found at most pet stores that sell fish. Once you have your breeding pair, you’ll need to set up a breeding tank. This can be done by setting up a 10 gallon aquarium with a sponge filter and a few plants. The plants will help to provide oxygen and hiding places for the fry (baby fish).

Once your breeding tank is set up, you’ll need to condition your fish. This can be done by feeding them a high quality diet and making sure they have plenty of places to hide. After a few weeks, your fish should be ready to breed.


To breed your Rosy Red Minnows, you’ll need to set up a spawning mop or a spawning grate in your breeding tank. The female will lay her eggs on the mop or grate, and the male will fertilize them. Once the eggs have been fertilized, you’ll need to remove the mop or grate and let the fry hatch and grow on their own.

If you take good care of your breeding tank and your fry, you should be able to successfully breed Rosy Red Minnows.


How many rosy red minnows should be kept together?

Ideally, a group of 10-15 rosy red minnows should be kept together.

Do rosy red minnows need a heater?

Yes, they do. Rosy red minnows are a tropical fish, and as such, require a heater to maintain a warm water temperature. Without a heater, the water temperature will drop and the fish will become stressed, which can lead to illness and death.

What fish are compatible with rosy red minnows?

Rosy red minnows are compatible with most fish, but do best with other minnows or danios. They are also compatible with goldfish, but may be bullied by them.

How many rosy minnows can go in a 10 gallon tank?

It is recommended that you keep no more than six rosy minnows in a 10 gallon tank.

How fast do rosy red minnows multiply?

Rosy red minnows are a type of fish that is known to reproduce and multiply quickly. In the wild, these fish can multiply and grow their population at a rate of about 10% per month. In captivity, however, they can reproduce even faster, with some aquarists reporting rates of 20-30% per month. 

This is due to the fact that in captivity, they are not subject to predation and have a constant food supply. So, if you’re looking to quickly grow your rosy red minnow population, make sure to provide them with plenty of food and a safe environment.

Are rosy reds minnows aggressive?

No, rosy reds are not an aggressive fish. They are a peaceful fish that can get along with most other fish.

Final Thoughts

If you’re looking for a fish that is easy to care for and that will add a splash of color to your aquarium, then the Rosy Red Minnow is a great choice. These fish are relatively hardy and can tolerate a wide range of water conditions, making them ideal for beginners. They are also peaceful and make good tank mates for other community fish.

One thing to keep in mind is that Rosy Red Minnows are livebearers, so they will need a source of live food in order to breed. Other than that, these fish are relatively easy to care for and make a great addition to any community aquarium.


[Revised and Updated for July, 2019]
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Written by Debra Hutchinson, founder of FishXperts

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