Biggest fish of freshwater arapaima
Fish is the length of three meters was very popular in the Amazon river has been stripped to perish
Researchers have shown that the great fish is no longer available in the areas he was famous.
It has been found now that the arapaima fish was found in 8 out of the 41 areas surveyed, the number of fish that was too small kulikoilivyokuwa expected.
Fishermen were trained how to count the fish to achieve large-scale survey.
Researchers concluded that the impact of fishing on tropical fish was worse than previously thought.
The results of the fitihuo were committed to environmental conservation organization aquatic producers 'Aquatic Conservation: Marine and Freshwater Ecosystems'.
Arapaima can have a weight of 181 kg and is one of the oldest fish living in freshwater.
Fish breathe the same air and humans, so it emerges from the water to breathe every minute between 10-15, making them easy to catch.
Size of arapaima attracts fishermen hunt and often catches using nets and harpoons.
A century ago, the number was large arapaima in the Amazon, but researchers say overfishing has reduced their numbers dramatically.
Previously, the theory predicted that fishing does not destroy certain types of aquatic fish for fishermen go fishing different areas runs low number of fish in the same area.
Scientists, led by Leandro Castello, from Virginia USA, wanted to know how healthy the arapaima fish that are in the bottom area of the Amazon.
They also want to discover if fishing activities supported whoever seemed predictions or different theory.
There are theories suggesting that fish older, are expensive, and that is easily stripped and the arrest can end the water, while other theories opposed to this position.
The researchers interviewed 182 fishermen, who were considered as masters and others, in 81 communities living in an area of 1,040 kilometers, the Amazon.
Such activity counts were also carried the fish in 41 races between interviews.
Eight fishermen were taught to count the number of arapaima moment they struck the water.
Results of the census revealed that arapaima populations were depleted in 57% of the study area, arapaima were not present in 19% of the area, and stripped of excess in 17% of the area hla research, while 5% only carrying fishing acceptable.
With 2% of the communities surveyed, the fish were not caught.