Paraschistura pasatigris can be diagnosed from its congeners in Iran by a combination of the following non-unique characters: a suborbital flap present in males (vs. absent in P. aredvii and a suborbital groove in P. nielseni); more slender caudal peduncle (caudal peduncle depth 1.6-1.8 times longer than deep vs. 1.1-1.4 in P. nielseni); back and flank in front of the dorsal-fin origin fully covered by scales (vs. absence of scales on the back and on the flank in front of the dorsal-fin origin in P. abdolii and P. cristata; and scales completely absent in P. kessleri and P. turcmenica); absence of a long dorsal adipose crest (vs. presence in P. cristata); pelvic-fin origin behind a vertical through the dorsal-fin origin (vs. below or slightly in front in P. naumanni). It is distinguished from P. bampurensis and P. hormuzensis by having a pointed suborbital flap in males overlapping the slit below the lachrymal bone (vs. triangular, not overlapping the slit) and a blunt snout (vs. pointed). It differs also from P. abdolii, P. cristata, P. kessleri, P. naumanni and P. turcmenica by the presence of a suborbital flap in males (vs. absence) (Ref. 103390).

Description: Dorsal fin with 7-8 1/2, anal fin with 5 1/2, pectoral fin with 7-9 and pelvic fin with 6-7 branched rays; caudal fin deeply emarginate; and considerable variations in color pattern exist within and between populations (Ref. 103390).