Molly Fish Complete Care Guide
#Molly_Fish #aquarium_fish #black_&_white_fish
Mollies are one of those most popular fish in the aquarium hobby, and most people have had at one time, at least one of these gentle and attractive live bearers in their fish tank. Most people mistakenly believe that there is only one species of molly available in fish stores, but there are actually three separate species available in the aquarium trade. However, at this point, most of the mollies available are so hopelessly hybridized, that it would be impossible to determine which species they originated from.
If you ever come across wild mollies in a fish store, they will usually come from one of two species. The first species is sailfin mollies (Poecilia latipinna) which are found in the coastal waters of the southeast United States and around the Gulf of Mexico. These are among the most common type of molly, and are incredibly prolific breeders in the wild. Because they live in coastal regions, they have a high tolerance for brackish water, and have even been found living in the ocean.
The other species that is commonly found in the aquarium trade is the short-finned molly (Poecilia sphenops). These fish are found in Mexico, Central America and in the northern parts of South America. The short-finned molly adapt most readily to the home aquarium, and is one of the easiest beginner fish available . Like their sailfin molly relatives, they can also tolerate high salinity in water, and do well in both brackish and freshwater tanks.
There is a third species of mollies that is occasionally found in the aquarium hobby, but it is far rarer than either the short-finned molly or the sailfin molly. It is the Mexican sailfin molly (P. velifera), and is very difficult to breed and keep in aquariums, though it does well in outdoor ponds. It is found in the wild in the coastal regions of Yucatan in Mexcio, and like the other two species, tolerates a very high level of salinity in the water.
Housing Molly Fish
The short-finned molly is undemanding when it comes to providing them with an aquarium, and most will happily live in a 10 gallon aquarium. But if you really want them to thrive, they should be provided with at least a 29 gallon long tank.
Sailfin mollies on the other hand, grow much larger than their short-finned cousins, and require a minimum tank size of at least 29 gallons. But like many other large fish in the hobby, the fish will do much better over the long run if they are provided with a large tank right off the bat. Larger tanks also have the benefit of offering a more stable environment for the fish, since they aren’t as prone to the sudden water quality fluctuations that smaller tanks suffer from.
All of the species of mollies that are commercially available are docile fish, and will do well in any peaceful community tank. And emphasis should be placed on the word peaceful – if there are any aggressive fish in the tank, the wide-bodied and passive mollies will be bullied mercilessly.
When it comes to filtration, mollies do much better when the tank is over-filtered. They aren’t necessarily a messy fish, but some of the hybrids are more susceptible to disease than some of the other beginner fish, and do better when living in well maintained water. The best filters to use are either a high quality hang-on-back filter, or a canister filter if you can afford the hefty price tag that comes with it.
I would strongly recommend choosing an Aquaclear Power Filter for a molly tank. This filter combines excellent filtration with a durable design, and it will keep your tank sparkling clear for years to come. You can also read the Aquarium Tidings Aquaclear Filter Review here.
One question that comes up often with mollies, is “do mollies need salt in their water?” The answer to this question isn’t simple, and a lot depends on what species of molly you have. As with most fish, mollies do benefit with some aquarium salt in the water, but nothing has conclusively shown that mollies need to be kept in water with salt added. In fact, most mollies will thrive in a completely fresh water aquarium, with absolutely no salt added.
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