Above: a nice Black Molly swimming in one of our aquariums, when one of us snapped this picture.
Comments: This is a Premium Pet Fish, and we never see Premium Mollys like these in any of the live fish stores that we visit.
Premium Pet Fish are more energetic, hardier, and have brighter colors with a beautiful metallic sheen. Click here to learn more about Premium Pet Fish.
Origin: Mollys are one of the most colorful, and most popular aquarium fish. Their ancestors originally lived in coastal areas of southern Mexico in freshwater, brackish water, and saltwater.
But Mollys are now found living in aquariums throughout most of the world. There are many color varieties for sale in this store.
Maximum Size: In aquariums Mollys can grow to be about 5" long, including their tails.
Behaviors: Most Mollys are very active swimmers, and chase each other, but are rarely too aggressive.
Female Mollys release live baby fish about once a month when kept in good water, and fed lots of premium food.
Compatibility: Some recommended tank mates include Corydoras Catfish, Danios, Barbs, Rainbowfish, Plecostomus Catfish, Swordtails, Gouramis, and other medium sized fish.
Click here to read more about compatible groups of pet fish.
Temperature: Mollys can live pretty well from about 72 to 86 degrees F., but they're probably most comfortable from about 78 to 82 degrees F.
Click here to learn about aquarium temperature, aquarium thermometers, and aquarium heaters.
Feeding: Premium Fish Food Flakes when small and Premium Pellet Food when larger.
Click here to learn more about and shop online for premium fish foods.
Water Conditions: Mollys seem to be tolerant of a wide range of water conditions. Probably a pH of about 7 with moderate hardness is best.
Most water in the US seems to be OK, so it's probably best NOT to adjust the pH or the hardness of the water.
Here in our facilities the water is hard and the pH is usually about 7.8. We ship them in this water.
Click here for a lot more information about aquarium water conditions.
Aquarium Size: It's probably best to house these fish in at least a 30-gallon tank, and more is better.
Keep at most one Molly per gallon, when they're small. Larger Mollys need up to 5-gallons per Molly.
Decor: Mollys do not need gravel, and a layer of gravel more than 1/4" thick will usually fill with bits of uneaten food that will contaminate the water.
Click here for more about aquarium gravel.
Live Plants are beautiful, improve the water quality, and are enjoyed by Mollys and baby Mollys.
Water Sprite and Java Ferns are very good plants for Mollys. Non-toxic driftwood is also very good.
Click here shop in this store to buy Aquarium Plants.
Aquarium Filter: Bio-Wheel Filters are highly recommended. A Penguin 100B Filter in an aquarium with 10 to 20-gallons of water is ideal, and a Penguin 200B Filter is the right size for a 20 to 30-gallon aquarium.
Click here to learn more about aquarium filters.
The addition of Lava Rocks will keep nitrates in the ideal range. Click here to learn more about using Lava Rocks in aquariums.
Life Span: Mollys live for a few years. In the meantime the next generation of Mollys have usually been born.
Gender: It's easy to tell the males from the females even at a very young age. Males develop a larger top fin than female.
Females are slightly less colorful, plumper, and have a dark spot on the rear of their abdomens.
Breeding: You do not need a male! Even a very small young female is pregnant, and will release babies in a few months, provided the water is good, and she is fed plenty of premium fish food flakes.
A female Mollys will release live babies and not lay eggs like many other fish species. The babies start eating bits of food shortly after being released.
In her abdomen the female usually has many more fertile eggs. that will soon become live babies and then be released about a month after the previous bunch was released.
This process can continue for about 5-months without a male anywhere in the aquarium.
Click here for a lot more about breeding various tropical fish in aquariums.
Popularity: For a long-long time Mollys have been one of the most popular aquarium fish.
Names: All of the fish in the genus Poecilia, except Guppies and their close relatives like Endler's Livebearer, are called Mollies, and all aquarium Mollies are very likely to be hybrids of several species from the genus Poecilia.
This may sound confusing to some aquarists, but can generally just be ignored.
Variations: There are many-many color varieties that will interbreed to produce even more color varieties.
Click here for a lot more information about keeping and caring for Mollys, including a picture gallery.
We hope you've enjoyed reading these comments.
We have 380-aquariums with lots-and-lots of popular aquarium fish plus lots-and-lots of rare fish!
We consider ourselves to be the link between the world's best sources of fish and the world best customers. We love our work, and we are very responsible.
All of our fish are Premium Quality Fish from the best suppliers in the world. Our fish have better health, more energy and brighter colors, as you can see in our pictures on this website.
We also offer lots and lots of information about keeping pet fish, all from the knowledge of the Bailey Brothers, who have a combined total of 100+ years of experience as breeders, wholesalers, and retailers of pet fish!
Our fish and our customers are treated with the best of care, and we work energetically everyday to make sure every customer enjoys their new fishy friends.
When you purchase pet fish from us, you know you're receiving premium quality fish and premium quality service.
"Received my fish last night and was so pleased! They all arrived alive and appeared to be healthy.
"Once in the tank, they became very active and are now thriving in their new home.
"Beautiful fish, I asked for color and aquariumfish delivered. Processing and shipping was extremely quick."
Nevin and DrTom, the Bailey Brothers
This website is owned and operated by the Bailey Brothers, DrTom and Nevin, who've been together in the fish business for more than 50-years.
The Product Manager has been with the company for more than 35-years.
So we feel very confident that this is the fishiest crew anywhere.