-
low crest over eyebody spots > 1/2 eye
no light bar between eyesD1 origin behind pectoral base, over internal margin -
eye crest ends abruptly
deeply concave between eyesno clear bar between eyes
body spots < 1/3 eyeD1 origin over pectoral base
skin denticles small, smooth -
eye crest ends gradually
weakly concave between eyespale bar between eyes
body spots > 1/2 eyeD1 origin over pectoral
skin denticles large, rough