Cutting a single fish nets you 4 steaks. Cutting 2 nets you 12. Cutting 3 nets you 20. So, take the stack size, minus one, and multiply that figure by 8. Then add 4, and that's your steak total. I also don't have solid figures, I need to fish up more... But, it seemed like cutting a Yellowfin Barracuda while there was already a stack of the steaks in my pack only earned me 4, when cutting one without a stack was getting me variable numbers significantly over 4 (I remember seeing an 18).