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Tropical fish belong to the most beautiful fish in the world. They live in warm seas of tropical regions, often among coral reefs. Plenty of small, bright, colored freshwater tropical fish are the aquarium pets. Sea fish also can be kept in aquarium, but they are more expensive and it is more difficult to take care of them. The can live only in salt water.
Characiformes, which include such species as Inpaichthys kerri, Distichodus affinis, Phenacogrammus, Paracheirodon, Nannostomus, Hornatus, Chilodus punctatus and Filomenae, are among the most popular. But not everybody decides to keep in their aquaria Piranhas, which belong to the same group.
Siluriformes species are the same popular. This order includes such species as Synodontis, Talking catfisges which belong to Doradidae family, Mochokiella, Corydoras, Chiloglanis, Dianema, Hoplosternum, Ancistrus as well and many others. Functions done by these fishes in aquarium are very important – they clean walls and bottom of the place they inhabit.
In tropical group Perciformes order is presented by various Cichlidae. Their size varies in range from 2 to 90 centimeters and depends on the particular species. Pterophyllum and Discus which have been popular for many years, belong to this family.
Danio, Barbus and Botia from Cypriniformes family can be called the most widespread representatives of small tank fish world. It is no sense to keep them alone because they are mainly schooling fish.
One of the main peculiarities lies in the fact that tropical fishes are rather demanding not only to tank’s water temperature but also to its oxygen saturation. However there are exceptions. Macropodus has not so high demands to temperature regime due to its ability to endure harmless considerable temperature decrease.
Anabantoidei can go without aeration at all. Still for the rest of fish these conditions remain vitally important. That is the why it is recommended to worry about automatic heater purchase at once, which will possess the function of water temperature regulation and correct aeration maintenance.
On the whole freshwater tropical aquarium fish do not demand anything extraordinary unlike their relatives - sea and ocean representatives. That is why many of tropical fish admirers prefer namely freshwater fish due to the care simplicity.