Above Stomatepia pindu from LakeBarumbi mbu.The white dots are cephalic pits used to detect prey in the substrate.
Below Stomatepia mariae, and with Konia eisentrauti, also only found in Lake Barumbi mbu in Cameroon
Above also from Barumbi mbu Sarotherodon linnellii.
Below from Lake Bremen, Coptodon bythobates
And from the soda Lake Natron, more saline than the ocean.