And they took up twelve baskets full of the fragments, and of the fishes. Twelve baskets - These were either the baskets used by the disciples, see Matthew 14:20, or baskets belonging to some of the multitude, who might have brought some with them to carry provisions, or other things necessary for the sick, whom they brought to Christ to be healed.
Related Commentaries of Mark 6:43
Mark 6:43
43 And they took up twelve baskets full of the fragments, and of the fishes.