Has anyone seen this before? Is it mucous? And if so, is it normal? I am always worrying about RI's.. No mucous in nostrils, no extra mucous when I pull down the lips, but they are too finicky and havent tried opening the mouth yet. This mucousy stuff has been floating around my water dishes from time to time, sometimes theres absolutely nothing, other times theres a bit. I didnt really start noticing it until a week or two ago when I was cleaning, but its got me a bit worried

Heres the pictures: