Scientific Name
                        Ventrifossa sazonovi
                        
                        
                        Common Name
                        Dark smiling whiptail
                        
                        
                        Biology
                        Dorsal 
spines
(total): 2;  
Anal
spines: 0. Pelvic fin rays 9-10; second spinous ray of first dorsal fin with smooth leading edge; a well marked median nasal streak; chin barbel dark, length 17-24% of head length; outer premaxillary teeth notably larger than teeth of inner band; dorsum not strongly demarcated in color from rest of body in preserved specimens; suborbital shelf narrows anteriorly, somewhat constricted at anterior end.