Fishes - the most ancient class of water vertebrate animals who became inhabitants not only reservoirs and ponds over time, but also house aquariums. Fishes who live in an aquarium differ from the wild relatives in a bizzare shape, color, the size and other individual characteristics of the structure of a body.
As a rule, bright aquarian fishes are thermophilic, they feel comfortable at water temperature not less than 17 wasps, but there are exceptions and some types maintain low temperatures. The most popular families of aquarian fishes: - cyprinid, - belontiyevy,
- vyyunovy, - bychkovy,
- representatives of family of som.
It should be noted that life expectancy of any kind of fishes, always different and depends on a great number of attendants of factors, such as water, a forage, purity, temperature condition, quantity of fishes and their compatibility with each other.
Compatibility of fishes
Often if quantity of small fishes too big, i.e. the aquarium is overpopulated, life expectancy of inhabitants is reduced many times. Long there can live only those small fishes who are compatible with each other and approach on a family class. Also life expectancy of a small fish is affected by her size: it is considered that little small fishes live from 1 to 5 years. For example, widespread sword-bearers and the guppy grow old by 3 years, black morulius there lives on average 3-4 years, the cardinal too - 4-5, and labeo up to 8 years. It is considered that small fishes of the average size live 10 years, and here the largest individuals can live and 15 years. For example, in 5-15 years, somovy, cyprinid 4-10 years have average life expectancy, and all favourite goldfishes, astronotusa, tsikhlazoma and even big piranhas live from 10 to 30 years. Cases when large carps lived in an aquarium longer than the owner who died at the age of 78 years, received as a present an aquarium on majority are known. Males traditionally live on a year and a half longer than females. There are some breeds of fishes which females perish at childbirth. It can happen to any small fish, but the guppy and sword-bearers are most of all subject.
Environment
The important factor influencing life of a small fish is change of water in an aquarium and feeding. If seldom to change water, in an aquarium substances which will have negative effect on respiratory organs of a small fish will collect and over time will begin to oppress them. The fish replaced from dirty water in clean will not be able to be restored any more and, most likely, will die. In feeding of fishes it is important to understand that it is better not to finish feeding fish, than to overfeed, if constantly to shower in an aquarium of sterns, it will spoil, and fish will constantly eat up scraps which will affect further her health, being often shown in the form of diseases of the digestive system. High temperature of water in an aquarium will reduce too life of a small fish as in such water the exchange processes proceed quickly, and the organism of fish grows old. If to consider all factors which were listed above, life expectancy of small fishes it is possible to increase really the correct leaving. To understand the main thing what conditions will be comfortable to concrete breed of fishes, to remember purity, temperature and reserved feeding.