RGB Glow Squids.zip is a release file of the Minecraft resource pack RGB Glow Squids - 3 variants, made for Minecraft 1.16.3. It was published on October 1, 2020 and is 0 MB in size. For the full description, screenshots and every other version, visit the RGB Glow Squids - 3 variants resource pack page.
How to install: Put the .zip into .minecraft/resourcepacks (do not extract it) and enable it under Options → Resource Packs.