Problem with my Male Guppy

[Kelso]

I'm not sure if this is an emergency or not...i'm new to the fish world, i have a 5 gallon tank with 3 zebra danios and 3 male guppies. I haven't done any tests on the water because i just bought the aquarium about 5 days ago...i put some aqua plus water decontaminator and cycle in the water on the first day. I have the fish (all 6) for 3 days now and just today one of my guppies hasn't been eating, he hasn't really been moving around a lot either. I just noticed about an hour ago that he has a long clear/white string looking thing hanging off of him near his anus. I have no idea what it is and none of the other guppies have had this. So i'm asking the question...what is it? All answers are greatly appreciated. Thanks



I just did a water test and thses are my results...

pH-> with the low range tester about 7.6
with the high range tester about 7.4

ammonia -> roughly 1.0ppm
nitrite -> about 0.125ppm
nitrate -> about 1 or 2 ppm

I checked up on my guppie this morning and he seems alright...he's still not moving around very much and he hasn't eaten yet today so yeah...

 

[Sasha]

If your guppy isn't eating, that's a bad sign. Is there anything on his body, like wounds or parasites?

Is the aquarium fully cycled?
Is it possible for you to get some of the water tests?

 

[Kelso]

now that i've read around on the forums a bit...i'm not too sure if the aquarium is fully cycled. I'm going to go buy the test thingys sometime this week...can i get them at a place like petland?

 

[Sasha]

Any petstore would carry a water test. Are any of the other fish acting strange?

Be sure to get the water tested as soon as possible, because Ammonia is harmful to fish.

 

[Kelso]

All the other fish seem completely fine...their chasing eachother around and whatever..are zebra danios usually this full of energy? When i first put everything into the aquarium the guppies would just sit on top of the filter but now 2 of them play around with the zebra's and the other one just hides in the plants (fake plants).