A tidbit (ὀψάριον), or prepared food, is often translated as fish; however, it is not limited to just fish (ἰχθύς). The Apostle John is the only author who uses this word to describe food.
In the story of Jesus feeding five thousand men with five barley loaves and two small fish, recorded by the Apostle John in John 6:9, he writes that it is prepared food that the young boy had. In this sign, after giving thanks to the Father, the five thousand men following Jesus were able to eat until they were satisfied, John 6:11, leaving twelve baskets of barley and tidbits remaining. When Matthew records this event, he uses the word for fish (ἰχθύς), indicating that the prepared tidbits of food the young man had was cooked fish.
After the resurrection of Christ, to show the disciples that He truly was raised from the dead, He ate with them. The disciples had returned to their fishing business when Jesus stood on the shore, asking if they had food (προσφάγιον – food prepared beforehand). He then instructed them to cast their net on the right side, for they had not caught any fish. The results immediately showed the disciples that they were speaking to their Lord, for they had caught more fish than they could draw in the boat, John 21:6. Once they came to land, Jesus had some prepared food on the coals with bread, John 21:9-10. After setting down to eat breakfast, Jesus partakes of the food to show them He is human, not a spirit. This is the third time Jesus appeared to them after His resurrection, John 21:14.
