Hi so a few days ago I got an orange glofish tetra from the pet store. He was fin at the store and when I out him in my 15 gallon tank he looked alright but today I noticed some white sports on his fins. He has also been scrunching up his fins now and then. He has been eating fine but does it sound like ich? And did I do something to couse it or was it the pet store and lastly if he does have it how do I treat him, he is in the tank with 4 other glofish. The tank is planted and has a filter and heater but not a coal filter. I have had the tank for a little over 2 months. And it was finished cycling when the first fish went in. Thanks for your help!