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Table of Water Chemistry Measurements 

~South America~

 

Map source unknown. Contact me for credit.

 

Collecting Site-water type

pH range

hardness

temperature

Rio Amazonas-white water 6.9 80 ppm 29°C/84°F
Rio Apayacu-white water 6.4 20 ppm 30°C/86°F
Rio Orosa-white water 6.5-6.7 60-110 ppm 30°C/86°F
Rio Maniti-white water No data No data 29°C/84°F
Quebrada Yanayacu-black water 6.4 20 ppm 27°C/80°F
Rio Ampiyacu-white water 6.4 20 ppm 29°C/84°F
Rio Napo 6.7-7.3 80-120 ppm 27°C/81°F
Rio Nanay 6.6-7.0 20 ppm 25°C/78°F
Rio Itaya-white water 6.0-7.0 no data 23-27°C/73-81°F
Quebrada Tuche Caño 6.5 60 ppm no data
Quebrada Yanashi 6.5 70 ppm no data
Rio Aguas yacu-white water no data no data 28°C/82°F
Cocha at Oro Blanco 6.5 120 ppm no data
Avaha Cocha at Oro Blanco 6.5 120 ppm no data
Paiva Chica Cocha 5.8 50 ppm no data
Lata Cocha 5.5 20 ppm no data
Urcu Cocha 5.5 1-2 ppm no data
Paiva Cocha no data 3 ppm no data
Rio Xingu 6.7 6.9 no data 23-28°C/73-82°F
Rio Araguia 5.8-7.5 (6.5) 4-20 (8) 22-28°C/72-82°F
Rio Negro 4.5-7 (6.0) 2-8 dH (6) 24-28°C/75-82°F
Orinoco river 4.5-7 (6.0) 2-8 dH (6) 24-28°C/ 75-82°F
Rio Cuiaba no data no data 23.6-28.9°C/74 -84°F

*Rio Paraguay/Rio Paraña;  

Paraguay and Argentina

 6.5-7.5 (7.0) 4-14 dH (8) 21-25°C/70-77°F

 

*rio Paraguay piranhas can sometimes tolerate water temperatures as low as 59°F (15°C), It's recommended not to keep your piranhas in these lower temperatures. Die off does occur in those lower ranges.

 

Bolivia water values for piranha; 72-79 F, KH 0-10, pH 6.5-7.5. Surface temperature (Air) can vary from 50F-84F. Historically, water temperature in rivers normally is about 59F, but during die off's can drop to 39F (lowest record recorded was 36.5F in 1955).

 

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UPDATED: 12/04/2015