Table 1. Morphometric data for Tatia melanoleuca. Hol.=holotype; range includes holotype and one paratype. SD= standard deviation.
Hol. Low High Mean SD
Standard length (mm) 32.4 21.7 32.4 27.0 -
Percents of standard length
Body depth at anterior nuchal plate 23.4 23.4 25.6 24.5 1.5
Body width at cleithrum 22.0 22.0 24.3 23.1 1.7
Caudal-peduncle depth 13.9 13.9 14.5 14.2 0.4
Caudal-peduncle length 19.5 18.8 19.5 19.2 0.5
Caudal-peduncle width 6.0 5.8 6.0 5.9 0.1
Predorsal length 36.2 36.2 38.9 37.5 1.9
Postdorsal length 55.3 51.9 55.3 53.6 2.4
Preanal length 73.7 73.7 78.7 76.2 3.5
Prepelvic length 58.9 58.9 64.8 61.8 4.1
Dorsal-fin to pectoral-fin distance 22.7 22.7 26.9 24.8 3.0
Dorsal-fin to pelvic-fin distance 34.9 34.9 36.7 35.8 1.3
Pectoral-fin to pelvic-fin distance 38.0 38.0 40.5 39.2 1.8
Pelvic-fin to anal-fin distance 16.1 15.7 16.1 15.9 0.3
Prepectoral length 25.3 25.3 27.3 26.3 1.4
Dorsal-fin base length 12.9 12.9 13.4 13.1 0.3
Adipose-fin base length 5.2 5.2 5.7 5.4 0.4
Anal-fin base length 9.1 9.1 9.8 9.4 0.5
Dorsal-fin spine length 22.3 20.4 22.3 21.4 1.3
Pectoral-fin spine length 28.6 28.4 28.6 28.5 0.1
Postcleithral process length 19.6 19.6 22.1 20.8 1.8
First branched pelvic-fin ray length 13.3 12.0 13.3 12.7 1.0
Longest anal-fin ray length 12.7 12.7 13.0 12.9 0.2
Maxillary barbel length 34.0 34.0 40.7 37.3 4.8
Lateral mental-barbel length 9.1 9.1 10.6 9.9 1.0
Medial mental-barbel length 6.3 6.3 6.8 6.5 0.3
Head length 31.6 31.6 32.4 32.0 0.6
Percents of head length
Head depth 66.4 66.4 69.5 67.9 2.2
Head width 68.8 68.8 72.4 70.6 2.5
Snout depth 34.5 34.5 38.5 36.5 2.8
Interorbital distance 42.0 42.0 42.9 42.4 0.6
Anterior-posterior nareal width 14.3 11.8 14.3 13.0 1.7
Anterior internarial distance 26.6 23.2 26.6 24.9 2.4
Posterior internarial distance 26.0 26.0 29.8 27.9 2.7
Snout length 31.5 31.5 31.8 31.7 0.2
Orbital diameter 30.2 30.2 30.5 30.4 0.3
Mouth width 30.1 30.1 33.4 31.7 2.3
Prenasal length 11.9 10.7 11.9 11.3 0.9