Worms(earthworms, waxworms, butter, meal, etc..)

[Whistly]

Here is a worm at the top of the tank.

[Deku]

Here is a worm at the top of the tank.

That's an obnoxious worm. I'd burn it. :l or pick both ends of the worm and pull it apart (destructive when Iam annoyed at small insect/creepy crawlies--- lulz).