THir (green) and DAPI (blue) stained coronal sections of cave (left; a, d, g) and surface (right; b, e, h) Astyanax. THir labeled somata had significantly larger (p < 0.001) diameters in cave Astyanax in the magnocellular pear shaped (type 2) cells of the periventricular nucleus of the posterior tuberculum (TPp; d-f) and adjacent to the paraventricular organ (PVO; g-i), but not in the periventricular pretectal nucleus (PPr; a-c). The box plots in the right column (c, f, i) show the distributions of THir somata diameters of cave (pink) and surface (blue) Astyanax for that row. Black dots are the mean diameter, middle white line is the median, limits of the colored box indicate quartiles, and vertical white lines extend to the minimum and maximum diameters.