black mollys black molly aquarium

Title: Black Mollys – The Ultimate Guide for Your Black Molly Aquarium

Are you looking to set up a black molly aquarium? If yes, then there are some important things you need to know before bringing home your new pets. Black mollies are one of the most popular aquarium fish species, known for their vibrant black color and peaceful nature. In this article, we will provide you with a comprehensive guide for setting up and maintaining your black molly aquarium, from recommended tank size and water parameters to suitable tank mates, feeding habits, and common health concerns.

Planning Your Black Molly Aquarium

Before setting up your black molly aquarium, it’s important to plan the right conditions for them to thrive in. The ideal tank size for black mollies is a minimum of 20 gallons, with a pH range of 7.0 to 8.5 and a water hardness of 12 to 25 dGH. It’s essential to have a heater to maintain a temperature range of 75 to 82 degrees Fahrenheit, and a filter to keep the water clean.

Choosing the Best Tank Mates for Your Black Mollies

Black mollies are peaceful fish and are suitable for community tanks with other peaceful species. They are known to get along with other mollies, swordtails, platies, and gouramis. However, avoid adding aggressive species or fin-nippers, as they may stress your black mollies and cause health problems.

Feeding Your Black Mollies

In the wild, black mollies are omnivores and feed on a combination of small plant matter, algae, and small invertebrates. In the aquarium, you can feed them flakes or pellets, supplemented with algae wafers, frozen or live brine shrimp, or bloodworms. Black mollies are active fish and have high metabolisms, so it’s important to feed them small, frequent meals throughout the day to prevent overeating and digestive issues.

Maintaining the Health of Your Black Mollies

While black mollies are hardy fish, they can be susceptible to certain health issues if not kept in the right conditions. Ich, a parasitic disease that causes white spots on the fish’s body, and fin rot, which affects the fins, are common health concerns for black mollies. It’s important to maintain the right water parameters, keep the tank clean, and avoid overfeeding to prevent these health issues. If you notice any signs of illness, it’s important to consult with an experienced aquarium vet.


1. How many black mollies can I keep in a 20-gallon tank?
– It’s recommended to have one inch of fish per gallon of water, so you can keep up to five black mollies in a 20-gallon tank.

2. Do black mollies need a heater in their aquarium?
– Yes, black mollies require a heater to maintain a temperature range of 75 to 82 degrees Fahrenheit.

3. Can I keep black mollies with aggressive fish species?
– No, black mollies are peaceful fish and are not suitable for tanks with aggressive or fin-nipping species.

4. What’s the ideal pH range for a black molly aquarium?
– The ideal pH range for a black molly aquarium is 7.0 to 8.5.

5. What do black mollies eat in the wild?
– Black mollies are omnivores and feed on a combination of small plant matter, algae, and small invertebrates in the wild.


Setting up a black molly aquarium can be a rewarding experience for any fish enthusiast. With the right planning, tank conditions, and feeding habits, your black mollies can thrive in their new home. Remember to maintain a clean tank, watch for signs of illness, and provide a peaceful environment for your black mollies to live in. We hope this comprehensive guide has given you all the information you need to set up and maintain your black molly aquarium.

Recent Posts

link to zuurstofsteen


Zuurstofsteen: Alles wat u moet weten over deze unieke steen Als u op zoek bent naar een zeldzame edelsteen, moet u zeker eens kijken naar de zuurstofsteen. Dit mineraal is niet alleen bijzonder...