A wild Pacu eats ~0.124kg of seed from a Fish Feeder but hovering over its digestion information says it should eat 0.3.
They also only eat seed from a Fish Feeder every 2nd cycle causing them to have one cycle of, "Ate from Feeder", status then one cycle without. This causes them to take 20 cycles to tame when taming with seed.
- Place a pacu in water
- Place a fish feeder in the water
- Place seed (I tried with Blossom Seed and Bliss Burst Seed) in the fish feeder
- Observe pacu feeding schedule, status