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Freshwater symbiotic relationships?

Answers:1   |   LastAnswerAt:2010.01  

Smurf Catcher 
Asked at 2010.01.17 05:12:35
Does anyone know of any freshwater species that have symbiotic relationships? Kind of like in saltwater with the clown fish and anemone or the goby and pistol shrimp.
answer nosoop4u246  Answered at 2010.01.17 05:12:35
In addition with Monster's bacteria, you can't forget that parisitism is symbiosis, though only the parasite benefits in most cases. Ich (Ichthyophthirius multifiliis) is a parasite that sucks fishes' blood. Competition between species such as multiple species of Catfish competing for food in the bottom region of the tank, is also a form of symbiosis. Not all symbitic relationships are mutualistic. Another example of mutualistic symbiosis is found on many plant roots. Cryptocoryne species and many other groups of aquatic plants have roots which are home to nitrogen fixing bacteria. The roots provide a large surface area to colonize while the nitrogen fixing bacteria aerate the substrate and create nitrate which plants can use for cell growth.
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