I've had my White Cloud Minnow for about a year and a half now (bought 2 at the time but one died of dropsy about 6 months ago). He's in a planted 10 gallon tank with 4 tetras and 2 otocinclus. Lately (the past week or so) I've noticed he's been flashing up against the plants/rocks of the aquarium and acting a little differently, he used to be the ruler of the tank but that doesn't seem to be the case anymore. There are a few tiny patches where his scales look lighter but I don't know if that's from him scraping against the rocks or a sign of something else. I don't have a quarantine tank at the moment because since I never had to use it before I set it up for my betta. Any suggestions on what could be wrong with my White Cloud or what I should do would be appreciated.