overstocked? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 5 Old 03-24-2012, 05:42 PM Thread Starter
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I currently have a 20 gallon long thats almost done cycling and i am preparing to start stocking it soon. i want to put in guppies and pygmy corys but im still unsure about how many of each i should do. i would like to go with 6 pygmy corys and 9 guppies (3 male 6 female( i do have another tank for possible fry and i am prepared for that possibility)) but im worried that may be too much. thoughts?
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post #2 of 5 Old 03-24-2012, 06:36 PM
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Thats fine. I'd probably get 10-15 guppies.
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post #3 of 5 Old 03-24-2012, 06:45 PM
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I would say what you've planned is fine, but I wouldn't mix males and females. This fish breed like crazy and can have hunreds of babies.

55 gallon planted tank, starting over!!!( looking crappy, needs a major rescape)
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post #4 of 5 Old 03-25-2012, 03:01 PM
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Yes, you should stay with male guppy. And if you have male and female, there should be 2-3 females for each male or the males may weaken and even kill the females. But each female can deliver 50+ fry almost monthly once they get going. I would stay with males alone.

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #5 of 5 Old 03-25-2012, 03:29 PM
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I wouldnt get all those fish at one time either, add a few each week untill your happy, this gives the Bio filter a chance to catch up with the added load.
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