I bought two juvenile clown loaches last Sunday, a week ago. They were small, about and inch and a half, 2 inches. They have been highly active and entertaining and really didn't hide as much as I thought from what I've read about them. Yesterday I did my tank's weekly 20%
water change and gravel cleaning and when I was finished I did not see them. It's a 120 gallon tank so I figured all the cleaning made them hide. I didn't think much of it. This morning they did not come out to eat, which is unusual, they have always come out for food. Hours went by and no sign of them. I finally got concerned and took everything in my tank out and moved the tank thinking they may had jumped when I had the glass lids off last night cleaning but I didn't find them. I know I didn't suck them up with my hose, it's too small.
I took every ornament and plant out the tank. I have 12 neons, 8 platies, 3 mollies, 4 cories, 6 danios and 4 red eye tetras but no clown loaches. I even took a flashlight and looked up inside of ornaments that were larger to see if they burrowed inside of them and nothing.
Do they burrow in gravel or inside of things (although I did swish a net through the gravel)? I don't have any other fish that could have harmed them and if they did die I have found 0 remains of them. Is there something I am not thinking of?