With the mammals, birds and insects living on the earth everything is clear – they, as well as people, use air for breath. The water environment strikingly differs from land. However people and fishes have not much differences in the plan of breath as it can seem at first sight.
It is required to you
- - microcompressor;
- - pomp.
Instruction
1. The vast majority of organisms (except for some species of bacteria) needs oxygen. Also fishes do not differ in this plan. In water there is a lot of a dissolved gas. That fishes also absorb its. The oxygen swallowed together with water gets to gills from where subsequently it is carried on all body, sating bodies and fabrics. Oxygen participates among the oxidation-reduction reactions proceeding in an organism due to which fish also receives energy.
2. Extent of absorption of oxygen from water is extremely high – 30%. For comparison, the person and mammals are capable to use only a quarter of the inhaled oxygen.
3. Not all fishes breathe only gills. During evolution at them also additional respiratory organs developed. For example, some fishes are capable to absorb oxygen through skin, and the Anabantidae family to which such types, popular among aquarians, as cockerels, guram, makropoda, lyaliusa belong have a branchiate labyrinth which allows them to use the oxygen which is contained in air. Moreover, if such small fish within several hours does not emerge on a surface, she will die.
4. If you support small fishes in an aquarium, you have to take care that your pets had enough oxygen in water. In natural reservoirs water is sated thanks to waves, various rises and rifts, falls. Artificial aeration by means of microcompressors and pomp will help with house conditions to improve gas exchange. Also you remember that the water temperature is higher, the in it oxygen is dissolved worse.