Suggestions of a hitchhiker? Ive looked never seen anything but its possible.In 25 years of keeping clowns I’ve never seen that! Is it possible sure anything is. I almost wonder if you have a viscous tank hitchhiker that you haven’t seen yet. Heck I had a polyclad flatworm the size of a baseball that eat all my clams and snails over a year before I saw it. There’s others on here that haven’t added anything in years and found a Bobbit worm.