>>6095594These guys begin to inhabit the tidal areas of beaches. The bottom set of eyes gradually atrophies away and the overheating/drying out problem is solved by being submerged for half the day by the tide. The connecting muscle for the vestigial bottom eyes transitions into grasping appendages for anchoring themselves to the ground so they don't get swept away by the tide change and they develop spiracles to better intake oxygen when out of water.
Sorry if that's too many changes at once but the water to land transition takes too much for it to be done one at time by multiple people and the land needs some kind plant analogue before the fishies can get up there.
