Rain,blood particle

Hi guys im new on the particle system in this engine.
So my question is ¿how i can do a rain particles and blood? when i say blood i mean for example and bathtub of blood instead of water.
Can you give me an idea? please.
Thanks for your attention.

It’s a bathtub full of a liquid, you probably want something like this and animate the UVs on the material: https://developer.playcanvas.com/en/tutorials/simple-water-surface/