Dalmatian Lyretail Molly Care: (Size, Tankmates & Best Diet)

The Dalmatian lyretail molly is an excellent choice if you’re looking for a beautiful aquarium fish to add color and personality to your tank.

This enchanting freshwater fish has vibrant black spots adorned with white dots, complemented by its majestic austere fins, which are lit in shades of yellow and orange.

Not only does this popular aquarium fish make a great visual addition, but it is also well-loved for its friendly nature amongst other community fishes.

pregnant dalmatian molly

These mollies care guide delves into the best care practices for keeping this remarkable species healthy and happy.

Learn about size specifications, suitable tank mates, and dalmation lyretail molly fish optimal diet requirements here!

How Big Do Dalmatian Lyretail Mollies Get?

How big do dalmation mollies get? The dalmatian lyretail molly can grow up to 5 inches long when fully mature. 

However, it’s best to provide them with plenty of space and a large tank size as they are active fish who require ample room to swim and explore.

Dalmatian Lyretail Molly Tank Mates

When it comes to tank buddies, the dalmation lyretail molly is pretty friendly and will usually get along with other peaceful species in the aquarium.

Some good options for tank mates include small tetras, guppies, danio, platy, and swordtails.

It’s best to avoid any aggressive species or fast swimmers, such as large barbs or angelfish.

Dalmatian Lyretail Molly Diet & Feeding Habits

Dalmatian Lyretail Molly Food: The Marbled Molly is an omnivore which means it will happily accept meaty and plant-based food.

Feeding dalmatian mollies a varied diet to ensure your fish receive all the essential vitamins, minerals, and nutrients they need for optimal health.

Recommended food items include sinking pellets or flakes, freeze-dried bloodworms, brine shrimp, spirulina wafers, blanched vegetables, and frozen food.

It’s also essential to supplement their diet with live or frozen foods such as mosquito larvae, daphnia, or brine shrimp.

It would help if you fed your mollies two to three times a day but make sure not to overfeed them as this can lead to health problems.

Also, remove any uneaten food from the tank to maintain water quality.

With the proper care and balance of diet and nutrients, your dalmation lyretail molly fish will have a healthy and happy life in your aquarium for many years!

What Size Tank Do Dalmatian Mollies Need? (Dalmatian Lyretail Molly Size)

Dalmatian lyretail molly tank size requirements: To provide your dalmatian lyretail mollies with enough room for swimming, you should select a minimum tank size of 20 gallons.

This will give them adequate space to maneuver and feel comfortable in their environment. Also, ensure to include plenty of hiding spots, plants, and driftwood for them to explore and hide from the light.

These peaceful fish love to seek refuge amongst lush plants, so provide some for them!

If you plan on keeping more than one dalmatian lyretail molly, ensure your tank is at least 30 gallons or larger, as dalmatian lyretail molly prefers to be manageable.

We also recommend providing a heater for the tank to keep temperatures within the ideal range of 72-78F (22-26C).

This will help ensure your Poecilia sphenops molly’s long-term health and prevent potential diseases.

By following these guidelines, you can be sure that your dalmation lyretail molly will stay healthy and happy in your tank for many years!

How Many Mollies Should You Keep Together?

Regarding how many mollies you should keep in your tank, the general rule is to only keep one Dalmatian lyretail molly per 5-10 gallons of water.

This allows each fish enough space and prevents overcrowding.

The exception will be if you have a huge tank (30 gallons or larger), in which case you can keep multiple mollies together.

How big do dalmation mollies get

However, it’s essential to ensure the water conditions are well maintained and that there is enough food for all the fish in the tank.

If you plan on keeping more than one marbled sailfin molly fish, “Poecilia latipinna,” you should also be aware of their social structure as they can be somewhat territorial.

It’s best to introduce all the mollies at once and ensure they get along before adding more fish to the tank.

Are Dalmation Mollies Aggressive? (Dalmatian Lyretail Molly Behavior)

Dalmatian lyretail mollies are generally peaceful and easygoing fish. They will rarely show any signs of aggression, but if they do, it’s usually limited to occasional displays of dominance or territoriality.

It is crucial to provide them with plenty of hiding spots and adequate space to prevent potential aggression.

Additionally, if you plan on keeping more than one molly together, introduce them all at once and keep a close eye on any signs of bullying or aggressive behavior.

Overall, Poecilia latipinna Dalmatian mollies are friendly and peaceful fish that will get along great in your tank if their living conditions are adequate.

Do Dalmatian Lyretail Mollies Get Along with Bettas?

Dalmatian lyretail mollies are generally peaceful pet fish that get along well with other community tanks.

They can even do well with bettas, as long as there is enough space and the water conditions are suitable for both species.

Bettas are known to be very territorial, so it is essential to provide plenty of hiding spots for both the female dalmatian mollies and the betta.

Additionally, make sure the tank is large enough to accommodate both species and that you feed them separately to prevent any potential aggression.

How Can You Tell If a Dalmation Molly Is Male or Female?

Dalmatian lyretail molly male and female fish look very similar, but there are a few subtle differences you can look out for.

Male dalmatian mollies tend to have longer dorsal fins, lyre-shaped caudal fin, and anal fins with pointed tips, while females usually have shorter and more rounded fins.

In addition, males often display a bright golden-yellow coloration with black spots, while females typically have more muted colors.

Finally, male mollies also tend to be larger than females and will display a “mating dance” when trying to attract a female mate.

By looking for these subtle differences, you should be able to distinguish between male dalmatian and female mollies.

How Do You Know If a Dalmatian Lyretail Molly Pregnant?

It can be challenging to tell if a Dalmatian lyretail molly is pregnant, as they don’t show any external signs.

However, you may notice changes in their behavior, such as increased aggression or swimming more erratically than usual.

If you suspect your molly might be pregnant, it’s essential to provide plenty of hiding spots for your pregnant dalmatian to keep her stress levels low.

Additionally, please make sure the water conditions are suitable for fry and that you have a separate breeding tank or breeder box ready for when she gives birth.

What Is the Lifespan of a Dalmatian Molly fish?

The average lifespan of a Dalmatian lyretail molly is 3 to 5 years. However, their lifespan can be extended up to 8 years with proper care and maintenance.

Maintaining good water quality, providing a nutritious diet, and monitoring their health are essential. To maximize the lifespan of your mollies, 

Additionally, make sure to provide plenty of hiding spots in the tank as well as adequate space for them to swim freely. By taking all these steps, you can ensure your mollies live a long and healthy life.

Dalmatian Lyretail Molly Care

Dalmatian lyretail mollies are easy to care for and make great additions to any community tank. However, there are a few key points you should keep in mind when caring for them. This video covers the basics of molly care.

First, ensure you provide them with a tank of at least 20 gallons in size and plenty of hiding spots for them to feel secure. Additionally, keep their water temperature between 72-78 degrees Fahrenheit and maintain good water quality.

Feed your mollies high-quality flakes and supplement their diet with live or frozen foods such as bloodworms, brine shrimp, and daphnia.

Finally, monitor the tank regularly, a few times a week, to ensure the water parameters are stable and that all your fish are healthy and happy.

Following these steps, you should have no trouble caring for your Dalmatian lyretail mollies! They can provide many years of enjoyment in your tank with just a bit of effort!

Can Lyretail Mollies Breed with Regular Mollies?

Lyretail mollies can and will breed with regular mollies, but the resulting offspring may not be true to form and often have a duller coloration.

Therefore, if you’re breeding dalmatian mollies to show quality or want to maintain specific traits in your female molly fish, it’s best to keep lyretail dalmation molly and regular mollies in separate tanks.

Additionally, it’s essential to keep a close eye on the tank for any signs of aggression when first introducing fish, as lyretail mollies can be territorial and may try to establish dominance over other fish in the tank to protect their territory.

If you notice aggressive behavior, it’s best to separate the fish immediately.


The Dalmatian lyretail molly is an excellent freshwater and saltwater aquarium candidate as it is both peaceful and gorgeous; its vibrant spotted pattern, beautiful tail fin, and warm personality can create a stunning addition to your tank. Giving this hardy fish the proper care is key to ensuring a long and healthy life.

Keep the tank no larger than 15 gallons, with plenty of swimming area for the molly, and choose compatible tank mates of similar size and temperament. Lastly, provide a balanced diet with high-protein flakes or pellets combined with freeze-dried foods like brine shrimp or bloodworms as occasional treats to prevent deficiencies. With these tips in mind, you should have no issues caring for your little dalmation lyretail molly – sit back and enjoy watching them swim! 

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About Me

I am the founder of, a devoted wife and mother, and an avid fish enthusiast. My aim is to assist fellow fish lovers worldwide in understanding how to properly care for and breed their pet fish.

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