I have so many mods my recipes are all cluttered. Where exactly do I find the recipe for this? I've checked my chem plant and my oil refinery as well as my assembly machines and found nothing.

They're in the intermediates tab, right next to the coal liquefaction and lubricant recipes. There's also a search button in the crafting menu, and searching for 'fish' should bring them up.

If they're not appearing, you either don't have the coal liquefaction/lubricant techs researched, or it's a conflict with one of the other mods.

oh it requires coal liquefication. I thought it was a separate for early game oil starting.