The Mollies belong to the Poecilia family and are easy to keep in a tank environment; they are akin to the swordtail fish, which belongs to the Xiphophorus helleri group. It has a larger fin than the swordtail, called and mollies can be of many different shapes and size, reaching up to 4 inches sometimes with only the males being an inch or so smaller; the males and females differ in size, coloring and gonopodium but both sexes adapt to different living surroundings rather well.
From living in an estuary habitat to varying temperatures in a natural environment, Mollies can adapt to heat conditions ranging from 72 to 82 degrees Fahrenheit, preferably in hard water conditions (pH level of 7 or 8), which means bright lighting and a certain brackishness should be present in the water besides a variety of suitable plants.
The dietary habits of Mollies include feeding on veggies, like spinach and algae and they are more comfortable in areas that have a constant water flow. Being livebearers, Mollies typically spawn plentifully due to a lively disposition and ability to adapt easily in a communal tank set-up.
As for the Guppy fish, these belong to the Poecilia reticulata family and are off-shoots of the Poeciliidae family; found mainly in Guyana, Venezuela and Brazilian waters, they can be traced around the waters surrounding Trinidad and Barbados as well since the kind of environment enjoyed here benefits them: this means a temperature range of 68 degrees to 75 degrees Fahrenheit with pH levels as preferred by Mollies.
The Guppies can live in hard water well enough so long as tehre is plenty of lighting, added plant vegetation and assorted foodstuff made available to them in the tank environment. Being loose-school natured fish, the Guppies need to be on the go constantly with good tank breeding potential even as they eat their young, they still manage to reproduce easily enough in community living.
Learning about the easiest kind of fish to keep in a home aquarium is the first step towards ensuring you are an informed hobbyist; the next step is to learn about the different kinds ofaquariums available and which type is best to duplicate a natural ecosystem aided by advanced technology to provide healthy air and water conditions for the inmates of the tank.