Just noticed this morning that our common pleco suddenly has white on the corners of his tail and top fin. Doesn't look like ick, wasn't there a day or so ago, I did do a water change yesterday, all water testing looks normal, eating well this morning. Just not sure if this is normal. It's been in our tank now for 3-4 weeks, tank is 2 months old. Any thought or ideas? (S/he was very cooperative this morning to get so many pics)