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The Black Molly

Information on the popular Black Molly live bearing fish

The Black Molly is an aquarist favorite. They are very easy to keep and an active schooling fish. The Black Molly is a hybrid version of the Silver Molly that is distinguished by a completely black body. They grow to be about 3 inches in length and do well in an aquarium that is 20 Gal. or larger. The SeaClear Rectangular 29 Gallon Aquarium is a perfect size tank for many Black Mollies.

Mollies are hardy fish, however I do not recommend a Black Molly for a starter fish. I would suggest getting the aquarium set up and the biological filter established before purchasing any. Hybrid Mollies are more susceptible to disease. The extra stress from high toxin levels would only increase the chance of the fish getting sick. The Silver Molly is a better choice for starting a tank. Or you can use NutraFin Cycle Biological Aquarium Supplement to establish a biological filter quickly in a new aquarium.

Mollies are schooling fish and do best with 3 or more of the same kind. However with most live bearing fish the males may have little battles for dominancy. The weaker male will then suffer. The best solution to this is to have two or three females to every male. I would suggest that a school of eight mollies should only have 2 males max.

There are many different opinions on Mollies and aquarium salt. Do they need salt? Do they like brackish water? From my personal experience with Black Mollies I have seen them healthier and livelier when I have added salt to the water. I add 1 tsp every time I change out 10% of the water in my 20 Gal tank. I recommend using API Aquarium Salt.

The Black Molly is easy to keep and easy to breed. They will eat all kinds of food including flakes and algae. I suggest TetraAlgae Vegetable Enhanced Crisps to give your Mollies added nutrition from the vegetable supplements. These fish are social and very active fish. With a proper diet they are a great addition to any community tank.

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Female Black Molly

The Black Molly is an aquarist favorite.

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