engleskiThis species can be distinguished from Potamorrhaphis eigenmanni and P. guianensis by having the posterior third of the labial membrane highly expanded laterally, reaching to or passing the level of the ventral margin of the maxilla when folded ventrally (vs. narrow, not reaching the level of the ventral margin of the maxilla when folded ventrally); from P. eigenmanni by having 3 rows of accessory teeth on the lower jaw (vs. 2 rows), and 115-128 scales on the lateral line (vs. 97-119); from P. guianensis by having the contralateral branchiostegal membranes overlapping in the midventral line (vs. branchiostegal membranes not overlapping ventrally), 3 rows of accessory teeth on the lower jaw (vs. 4 rows), and dentary with coronoid process salient (vs. coronoid process not salient); from P. petersi by the coloration of the labial membrane with melanophores only in the inner margin (vs. melanophores uniformly distributed), 29-34 dorsal-fin rays (vs. 35-43), 25-29 anal-fin rays (vs. 30-39), deeper caudal peduncle (2.1-2.7 vs. 1.1-1.6% BL), longer predorsal length (62.9-67.6 vs. 59.5-62.8% BL), longer pectoral-pelvic distance (38.5-42.6 vs. 36.0-38.1% BL), and longer head length (17.6-18.9 versus 15.8-17.9% BL) (Ref. 92518).
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hrvatskiOva vrsta se razlikuje od Potamorrhaphis eigenmanni i P. guianensis imaju stražnje trećine se usneni membrana visoko proširio bočno, doseže do ili prolazak razinu Ventralni rub čeljusti kada presavijeni ventrally (vs usko, ne dosežu razinu Ventralni rub čeljusti kada presavijeni ventrally); od P. eigenmanni ima 3 reda pribor zuba na donjoj čeljusti (vs 2 retka), a 115-128 vage na bočnu liniju (vs 97-119); od P. guianensis vlasništvo kontralateralnim branchiostegal membrane preklapaju u midventral liniji (vs [branchiostegal membrane ne preklapaju ventrally), 3 reda pribor zuba na donjoj čeljusti (vs 4 reda), i dentary s coronoid proces vidljivi (vs coronoid proces nisu bitne); od P. petersi po obojenosti Sinehije membrana s melanophores samo u unutrašnje margin (vs melanophores ravnomjerno distribuira), 29-34 leđne peraje zrake (vs 35-43), 25-29 analne peraje zrake (vs 30-39), dublje repne drške (2,1-2,7 vs 1,1-1,6% BL), više predorsal dužina (62,9 67,6 vs 59,5-62.8% BL), duže prsni zdjelice udaljenost (38.5-42,6 vs BL 36,0-38,1%), i duže duljina glave (17.6-18,9 naspram 15.8-17,9% BL) (rif. orig. 92518).