Augustine of Hippo
Catena Aurea · Johannesevangelium 21
Jesus saith unto them, Come and dine. And none of the disciples durst ask him, Who art thou? knowing that it was the Lord. Jesus then cometh, and taketh bread, and giveth them, and fish likewise. This is now the third time that Jesus shewed himself to his disciples, after that he was risen from the dead. And none of His disciples durst ask Him, who art Thou? knowing that it was the Lord.
(Tract. cxxiii. 2) Mystically, the fried fish is Christ Who suffered. And He is the bread that came down from heaven. To Him the Church is united to His body for participation of eternal bliss. Wherefore He says, Bring of the fishes which ye have now caught; to signify that all of us who have this hope, and are in that septenary number of disciples, which represents the universal Church here, partake of this great sacrament, and are admitted to this bliss.