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02 June 2008

Effect of the weather to the appearing glass eels

Seri penangkapan (catching) ikan sidat (eel - Anguilla sp.). If you would lile to be a catcher, you have to know when glass eels appear in the mout of river, and when glass eels don’t appear. One of method, you have to see weather, because it is very influence to the appearing glass eels.


Appearing of the eels is very influenced by weather. When bad weather, or when raining, glass eels don’t appear, because rain water can strike their body, and it can be cause them dead. They better hidden under water, to save their life.


When raining, sky closed by cloudy, and cause sun, or moon shine blocked. It’s cause air temperature to be low, and humidity is high. It effected to water temperature, to be low. In this condition, glass eels don’t appear, because these like by hot.


When raining, sometimes wind blow very fast. It influence to waves. Waves ca be high. The eels don’t like by high waves, and these don’t appear to the surface or will hidden under water to save their life.


Although eels are very strong to current water, like they migrate to reach of river, or migrate to the sea, but don’t by glass eels. Glass eels still weak. These are don’t strong to high current water.


It cause them throw away to far of mouth of river. Even it can be them dead. Whereas, they are beter hidden under water to save their life. In this condition, glass eels don’t appear to surface of water.


Another factor that influence to appearing glass eels, that is turbidity. Turbidity in mouth of river more caused by river water. After raining, turbidity is very high, lands and muds carried by river water.