I imported your character into Unity 2023.3.0b4 and it is a magnificent work of art and technology!
https://vimeo.com/908545459?share=copy
The fabric physics came out really nice, the Emitting materials on the fish thingy was fine in this dark forest.
Only 1 issue: The IV tubing, I assume, is either too thin or too transparent and in rendering frames does not display at all.
D