Need help with guppy...

What are your ammonia, nitrite and nitrate readings?
 
Ammonia-0
Nitrite- I'd say midway between 0 & 0.25
Nitrate-5.0

It's a 5.5 gallon tank with a 10 gallon filter with 1 other guppy and 4 panda cories. I'm waiting for my 20 gallon to finish fishless cycle so I know I'm over stocked at the moment. 4 live plants and it's been cycled for about 2 weeks.
 
try feeding peas if hes constipated
 
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