Updated February 19, 2020
as the four-eyed fish, Anableps moves close to the deep sea telescope fish, Gigantura. Click here for the latest data. Both of these data come from the most basal ray-fin fish clade.
Anableps brings to mind
the vision issues facing other fish that sometimes expose their face to the air, like the mudskipper, Periophthalmus, and our pre-tetrapod ancestors among the lobe fin fish. All had distinct solutions to the aerial problem.
Linnaeus C 1758. Systema naturæ per regna tria naturæ, secundum classes, ordines, genera, species, cum characteribus, differentiis, synonymis, locis. Tomus I. Editio decima, reformata.
Scopoli GA 1777. Introductio ad historiam naturalem sistens genera lapidum, plantarum, et animalium. Wolfgang Gerle, Pragae 3-506.