Just so you know, he was not fishing for “bluegills” This is a bluegill:

Bluegills live in fresh water and are like “sunfish” and “pumpkinseeds” and “crappies” etc. all of which are in the bass family.

Bluefish live in the ocean and roam along littoral regions in large schools. This is what large bluefish look like:

Of course, when one is fishing for bluefish, there is always the possibility of catching the fish that eats them, such as striped bass. Like this:

The striped bass is not in the “bass family” referred to above. Striped Bass are Moronidae, bluegills, largemouth bass, etc. are Centrarchidae.

Anyway, sometimes you catch a shark.