Vintage Murano Sommerso Art glass Tadpole Fish Figurine Paperweight

This cute little fish-like thing is probably a tadpole.   It could also be a stylized guppy.  It was made in sommerso; two layers of glass blown together.  Sitting next to it in image 3 is a well-known Seguso (Murano) sommerso table-lighter.  This little fishy-thing is unsigned, but it definitely is vintage Murano glass.  The colorless glass glows yellow under black-light which helps us date it to the 1960s or earlier. The eyes were designed like little targets.  It's unusual to see decorative details in the eyes of figurines like this, the eyes are usually just blobs of frit in a single color. The black and pink ringed eyes are the cause of the dark reflections in the images below. Measures 5 1/4" long, 1½" tall, and 1½" wide. Weighs ½ lb.  Hand-blown. The pontil mark is polished in a moon shape and serves as the base.  No chips or cracks.  There are a few small scratches near the top of it's head between the eyes, and on the surface end of it's tail. Minimal.