Alpha Piscium v1.9.1-Beta1 is a beta file of the Minecraft shader Alpha Piscium, made for Minecraft 1.21.8, 1.20.5, 1.21.5, 1.21.4, 1.20.6, 1.21.1, 1.21.6, 1.21.3, 1.21.7, 1.21.2, 1.21.9, 1.21.10 and more. It was published on June 17, 2026 and is 48.3 MB in size. Pre-release builds can contain bugs — back up your world before installing. For the full description, screenshots and every other version, visit the Alpha Piscium shader page.
How to install: Put the .zip into .minecraft/shaderpacks (do not extract it) and select it under Options → Video Settings → Shader Packs. Needs Iris or OptiFine.
