Black molly peocilia sphenops husbandry and care in the aquarium

Black molly diseaseThe molly is a
robust fish, which has different color variations. Beside gray-green, silver, black or also spotted, dalmatian-like nuances the black breeding form (Black Molly) finds large paragraph with newcomers of the aquaristics. The Black Molly is normally a "descendant" of the Sharpmouth Carp (Poecilia sphenops). In Germany, this breeding form was first introduced in 1899. As viviparous blackmouth this fish is found in the vegetation-rich, tropical rivers and lakes from North America to South America, Found specifically in areas between Texas, Colombia to Venezuela.

black molly peocilia sphenops husbandry and care in the aquarium

The Black Molly at a glance

character: peaceful, in need of warmth
Appearance: black, velvety sheen
body length: males 6 – 8 cm, females 6 – 10 cm (clearly more plump) male With mating organ (converted anal fin) Life expectancy: until 5 years
Weight: about 100 g
urge to move: Very high

Husbandry and reproduction

The keeping of Black Mollies is relatively easy and a ideal start for new aquarists. If you would like to enrich your aquarium with the small black fishes, you should consider still important details.

Black Mollies are no schooling fish, but prefer the Living in a group of at least five specimens, of which a female acts as a livebearer. The Reproduction of the molly takes place several times a year. Thus per female after a gestation period from about four weeks the population by 30 to 80 fry increase. To avoid an uncontrolled "population" and excessive inbreeding, it is advisable to integrate some predators or to make the supernatant available to other new aquarists. The lively young fish explore already immediately after the birth the range of the aquarium. Since the parent animals do not perform brood care, it is therefore necessary to provide the young with a dense planting possibilities to Hiding to offer.

Furthermore the socialization a molly group for example with ground living catfish or Fan shrimp take place.


Black Mollys are known as vegetarians. Especially important is therefore a diet of Plant food in the form of fresh and dried vegetables, chickweed, spinach, crushed peas, seaweed and additionally Dry food. The plant-based diet can Water fleas and Mosquito larvae be supplemented. You have to take care to feed only in small quantities, so that the remaining food sinking to the bottom does not burden the nitrate balance of the aquarium.

Setting up the aquarium for the Black Molly

tank size and temperature

The size of the aquarium should be chosen with foresight. Here is a Basin from 100 Liter completely sufficient.

Black Mollys are heat-loving and feel at temperatures in the range of 24 to 28°Celius really well. They are extremely sensitive to temperature fluctuations, which should be taken into account when changing the water in the aquarium. The water should have hardness between 10° and 20°dGH (=degree of German total hardness) and a pH value of 7 to 8.2 show.


Recommendable is a lush planting of the basin, which include a variety of Hiding places for young fish offers. This includes for example Hornwort or the low-maintenance Hygrophila, whose side shoots need to be trimmed only rarely. For a high production of oxygen provides again the proven hornwort. There is a variety of aquatic plants. Before buying, however, you must inform yourself about the temperature requirements of the plants with those of the fish. These should correctly match.

Small tip on the edge!

At Disease of the Black Molly is often a small salt admixture into the aquarium helpful. This addition should of course also be compatible with the by-fish. When buying this factor should already be taken into account.

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