One of the flowering plants I have found I enjoy growing is Pentas. One summer we had some strange visitors come and make a home in my Pentas. They were so interesting that I let them have eat the folage of the Penta plant I found them in. And even named them Mr. & Mrs. Penta.. I did find out what they actually were called, but can't remember right now.
Wow, when I first saw the picture, it sort of looked as if they were in an aquarium, and I thought they were small eels. They're certainly interesting looking. If I find the really odd creature pic I have from years ago, I'll post it to compare. I found it outside my kitchen door, and have never seen another one. I never knew what those flowers were called, they're lovely!