this would be a good mod for space age to remove the spoilage from raw fish. just cook em!

That's a fun idea! To be honest, I have not looked into the spoilage mechanic yet, but I'll keep it in mind for the next update. The cooked fish should probably spoil eventually, but it would be nice if they could last longer. Kind of like cooked food in Don't Starve :)

The fishes are currently getting spoiled with your latest version and SA installed.

So since I have it, I dig into it a bit and found these lines in space-age/prototypes/base-updates.lua:

data.raw.capsule["raw-fish"].spoil_ticks = 453000
data.raw.capsule["raw-fish"].spoil_result = "spoilage"

These 2 properties are not set in base, so I guess you just have to delete them.

I recommend using if scripts.active_mods["space-age"] then and delete them.