As the name suggests, the tropical fish is found in the tropical regions of the Earth. These fish are classified under two categories, the saltwater and the freshwater fish.
However, only the freshwater fish are termed as 'tropical' by those who rear fish. Suitable for rearing in aquariums, tropical fish are imported by people from various countries. These fish have become popular because of their varied colors and hues. The types of tropical fish range from aggressive ones to some mild species.
Tropical fish are mostly used for rearing in aquariums. Let's take a look at some of the species of these fish.
It is advisable to keep, either a single oscar fish or more than six of them in an aquarium. It helps reduce the tension between these cohabitants. A single oscar needs an aquarium with at least 80 gallons water, while a 500 gallon aquarium is required for six oscars to comfortably live together.
The large plecostomus and whitetip sharks share space with the oscar fish without fighting or nipping at each other.
The round body structure along with triangular fins allow the angelfish to hide between plants and roots. This, in turn, helps them to prey on macroinvertebrates and smaller fish.
The striped body of an angelfish help them use the ambush technique. Stripes help these fish to hide, thereby acting as a camouflage. Just like the oscars, angelfish too quarrel with each other.
Thus, more than six angelfish need to be reared in an aquarium; there is great risk to keep lesser (than 6) number of fish in an aquarium. For example, if there are only two fish in an aquarium, one would kill the other.
Those tiger barbs with a brownish yellow skin color have black vertical stripes on the body. Tiger barbs are aggressive and nip at each other. Thus, at least six tigers barbs should be kept in an aquarium.
The black knifefish prefers to live in sandy creeks - its natural habitat and requires water with pH between 6.0 and 8.0. When fully grown, the fish needs a tank with a capacity of at least 75 gallons. Peas are the staple diet of these fish.
The fancy guppies exhibit different colors such as red, blue, green and black. However, the females don't exhibit much variety in their shades and are either gray or tan. Temperature of the aquarium should be maintained between 78oF and 82oF.
The mollies come from the same family as guppies. They need at least 15 gallons of water when kept in an aquarium. These fish cannot tolerate contaminated water and easily fall ill. The temperature of water for these fish need to be maintained between 70oF and 82oF.
Tropical fish that are kept in aquariums include the fish caught in wild, those born in captivity and finally the hybrid species. Scuba divers are always in search of colorful and varied species of tropical fish. Truly, the tropical fish are nature's gift to man.