Fancy Guppy

[Funny Pie]

I have two fancy guppys in my tank and they always play and swim next to each other. Today i was looking at them ( well last night) and i notice on one of hte guppies, the fin on top of his body was kinda yellow ish as you moved down his body. And then in the center it was white. Now i've never noticed it before, or maybe i've never looked at his fin close enough... is that normal? like is that part of his body or is it infected?

 

[WILDER]

Need to no water stats in ammonia,nitrite,nitrate,and ph, how many gallon is the tank, plus how many fish and which type.

 

[Funny Pie]

Need to no water stats in ammonia,nitrite,nitrate,and ph, how many gallon is the tank, plus how many fish and which type.

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Ammonia 0
Nitrite 2.0
Nitrate 10
pH 7.5

Reason that my nitrite is so high is becuase i was treating for ICH currently and i messed up my biological filter pack, but its restablizing and im treating it now so ya....
29 gallon US tank
2 Fancy guppies, 2 some type of tetra(orange with black tipped fins), 2 bala sharks, one baby red tailed shark(only about 1.5 inches) 5 neon tetras

 

[WILDER]

You are overstocked with them bala shark they will need a 120gal tank, plus red tailed shark should be in a 40gal tank, your nitrite is high do a water change, that why you have noticed your livebearers are suffering.