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|BRAZIL| Catfish in Amazon |
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by Luiz Bispo | 31-08-2015 23:51
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20% of all the fresh water flow into oceans of the world is from the Amazon. Almost 1,850 species of fish live in Amazon, which include the catfish family.
First of all, let me introduce briefly, some of the catfishes in the Amazon. First of all, Gilded Catfish – longer than 4feet, 220 pounds weigh and had large flat head. Secondly, Red-tailed Catfish- more than 3feet, over110 pounds weigh and massive head with strong bones. Third, Laulau Catfish- like other catfish, head big head with small eyes, 6and half feet, over 650 pounds weigh.
These giant catfish migrate to headwater in the Amazon liver and spawn and have larvae. They travel back to the place where they live and grow up until being mature to lay eggs again.
However, the research reported that current dams interrupt catfish's seasonal journey to be completed. The researchers were surprised that even though these species are well known to spawn a lot of young, very few catfish larvae were found in the Madeira basin in comparison to previous studies.
In Brazil, currently hydroelectric power plants have already constructed in two parts of Madeira , which is Antonio and Jirau. These dams are expected to affect the long range migrating species, which obstacle their lifecycle.
Source : Animals by Demand media |
  
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7 Comments
Arushi, great questions! That is a shame. Thanks for the comment!
Posted 04-09-2015 12:46
Harmanjot, thanks for the comment. I hope that as well.
Posted 04-09-2015 12:44
Hi!! Tunza Eco Genration! Thanks for your concerned for my article!! As your guide and I used google advanced image section with 'free to use , share or modify even commercially' and reuploaded! Thanks again!! :)
Posted 02-09-2015 05:53
These dams fragment and threaten cat fish. I wonder if any sustainability and feasibility studies were done before making these dams. Thanks for sharing , Luiz.
Posted 01-09-2015 17:23
BTW, Luiz, I'm worried about the copyright issues of the photos. Please read and check the photo credits and policy to reuse these photos. Otherwise, you may just link the original sources of the photos. Thanks for sharing as always!! :D
Posted 01-09-2015 17:02
Sometimes it seems that people don't understand they don't own the river. There are many creatures and visitors in the river not just for the humans. :( We need to study more deeply to understand the side effects of the dam construction, especially the Amazon is the most important river in the world, it needs to be observed more deeply in the aspect of biodiversity.
Posted 01-09-2015 17:00
Well looks like these dams are turning out to be barriers for them . They arent being able to go back where they are laying eggs . Hope that these fish dont get endangered in Brazil in near future .
Posted 01-09-2015 00:37