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Ostracoderms are, I think, the oldest fish in the fossil record. They were jawless and, importantly to this diversion from the overall discussion of possible phenotypes of extraterrestrial sapient flyers (???), had three eyes. It appears that jawed fish and eventually terrestrial tetrapods did evolve from jawless fish, but those early ostracoderms weren't all that much like lampreys. I don't think it's terribly helpful to keep going back to lampreys, and I don't think lampreys can be considered a basal species. They diverged from the lineages which eventually became tetrapods back in the early Ordovician. There's a lot of water under that bridge.

I feel it worth noting, again, that none of this is informative when attempting to consider possible phenotypes of extraterrestrial sapient flyers with any number of eyes. I would ask how much longer you intend to keep up this very much irrelevant thread derail, DavidMcC.