We may also attribute to the inherited effects of use the fact of the mouth in several kinds of flat-fish being bent towards the lower surface, with the jaw bones stronger and more effective on this, the eyeless side of the head, than on the other, for the sake, as Dr. Traquair supposes, of feeding with ease on the ground.
Halaber erabileraren ondoren heredatuei iratxeki diezaiokegu hainbat arrainzapal espeziek ahoa beherantz okerturik izatea, buruaren begi gabeko alde honetako masailezurrak bestekoak baino indartsu eta eginkorragoak izanik, Traquair doktoreak uste duen moduan, hondoan aise elikatzeko.