I got home to night and took a look at my quoraten tank see how my fish were doing. When I fed them I noticed that one of the guppies was no where to be found. I started to look for him and still nothing. I went in to a panic and started to move every thing around and still nothing. I look on the floor and all around the tank, and still nothing. It was a mystery. My wife had prepared some hamburgers for me to grill and was getting inpatient. So I decided to cook them instead and worry about it later. I put the burger on set the timer but it still bugged me. I went back in side to look for him. Right as the timer went off I saw him stuck to the inside of my air stone waterfall. A side note, I just pulled out a 4+ inch gold fish and put it in me 60 gallon aquarium on Friday. I say that so you know that it has a big colony of good bacteria, and I did not want to destroy it. That being said I not know how I was going to get him out of there. After considering it for a moment, I decided to take it out of the tank and use the blunt end of a thin stick. After all he was dead. I took it to the bathroom sink and push him out and he started to flop around. HE WAS A LIVE!!!. I scoop him up and put him back in to the tank. He is doing well and doesn't seem to be to affected by the experience. Meanwhile I burned the burgers to a nice back charcoal. I am still not sure how he got in there. However I took no chances. I stuff a bunch of filter pads in it to close off all ports. I know that this may be not a big deal to most people. But to me it was even if all ended well. I just had to get it off my chest. Also I was unsure where to post it as I have only been a member for a few days. Sorry if this is the wrong one.