Pre owned, Fully Cleaned! Fish sings with Loud speaker! Mouth moves, but tail does not. Button and motion detector doesn't work. Works by turning on and off. See photos for details. Sold as is. The Gemmy Big Mouth Billy Bones Singing Fish Skeleton is a vintage novelty item that mimics the appearance of a fish skeleton while also serving as a singing fish toy. This unique product combines entertainment and novelty, making it a fun addition for fishing enthusiasts or collectors of quirky fishing gear. With its quirky design and nostalgic appeal, the Gemmy Big Mouth Billy Bones Singing Fish Skeleton is sure to bring laughter and enjoyment to any fishing trip or collection.