John Gill Commentary Mark 8:7

"And they had a few small fishes: and having blessed them, he commanded to set these also before them." — Mark 8:7 (ASV)

And they had a few small fishes
Which they also acquainted Christ with, and brought out unto him:

and he blessed, and commanded to set them also before [them].
It looks, by this account, as if the fishes were blessed, and broke, and distributed separately, after the blessing, breaking, and distribution of the bread; and so the Syriac version renders it, "upon whom also he blessed"; and the Persic thus, "and he also blessed the fishes"; but, according to Matthew they were both blessed, and broke, and distributed together, as it is highly reasonable to suppose they were both ate together; (See Gill on Matthew 15:36).