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Old 10-04-2011, 10:49 PM   #1 
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Join Date: Sep 2011
Location: DC
fish and tank sizes

I am new to keeping fish and had a question regarding tanks and fish in them. I have seen countless videos on youtube with guppies and tetras living in 5 gallon tanks and thriving yet everything I read says a minimum of 20 gallons. Please let me know what the deal is. I would like to get new fish but I am in a college dorm and I am limited to the tank size i can have
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Old 10-04-2011, 11:20 PM   #2 
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I consider 20g for tetras excessive. They need 10g because you need I believe 4+ fish at least for them to be happy. Each fish, being at least one and a half inch, would need around 6-10g.

Guppies need at least 10gs for the same reason, but recommend 20 because they breed so much, and when they have their babies, they can live in the big tank and not need to be moved.
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Old 10-04-2011, 11:26 PM   #3 
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Join Date: Jun 2011
Location: Nova Scotia, Canada
I had tetras in a 10g, and just moved them to a 15g and they have perked right up. I would ok a 10g but their personality shines with more space. Guppies reproduce like rabbits. Friend of mine started out a small tank early this year, she now has hundreds. I would suggest a 20g for them but tetras can get along in a 10g with swimming area. Each type of tetra has a different personality too.
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