Here’s a great material by Czec company Sybai, their Polar Flash Dubbing.
This is a super fine and soft material with superb translucent properties. The Dubbing also has a super fine flash blended in. Not as short as normal Dubbings this is designed specifically for Bonefish shrimp patterns and small Baitfish imitations and is cut slightly longer. Very easy to use and create some great fly patterns from, the limit is just your imagination ! Available in a wide range of colours.
Here is a small Baitfish pattern tied with the Polar flash Dubbing, once submerged in the water the fibres will open out giving a broader but more transparent profile with great movement even at 2.5 inches long !