John 21:2
“There were together Simon Peter, and Thomas, and Nathanael,” (he that was called by Philip,) “and the sons of Zebedee, and two others.”
Having then nothing to do, they went to their fishing, and this same they did by night, because they were greatly afraid. This Luke also mentions; but this is not the same occasion, but a different one. And the other disciples followed, because they were henceforth bound to one another, and at the same time desired to see the fishing, and to bestow their leisure well. As they then were laboring and wearied, Jesus presents Himself before them, and does not at once reveal Himself, so that they enter into converse with Him. He therefore says to them,
Source: Homilies on the Gospel of John (New Advent)