They could of been carp but I really dont think so. I’ve seen lots of carp and these were not the right color or shape, and they were over deepish water.
I’ve not seen gar in person to be able to identify them but these did seem to fit that description however I didnt notice any beak and aren’t they fairly rare?
They definitely were not trout, these were way to long and did not act at all like trout.
I doubt they were any type of baitfish as most were 20-40 inches.
They honestly looked like muskie or pike but I’ve never heard of them doing that on surface like that.