Ok. This little bugger is in my 10 Gallon nano/QT. He is maybe 1 inch across. It extends out at night. Has what looks to be tentacles on the top as you can see. I was not worried about it untill I droped a snail down in the hole and BAM!!! The little monster sucked in the whole snail. Has it enveloped right now. At any rate, I would hate to see a fish get sucked in by this thing. Any idea on what it is? Fluff? :?