| Variable | PC1 | PC2 | PC3 |
|---|---|---|---|
| Standard length | 0.224 | -0.150 | -0.079 |
| Body depth | 0.164 | 0.155 | 0.060 |
| Body width at dorsal origin | 0.163 | 0.123 | 0.287 |
| Head length | 0.169 | 0.050 | -0.002 |
| Head depth at nape | 0.165 | 0.173 | 0.108 |
| Head depth at eye | 0.148 | 0.150 | 0.112 |
| Caudal-peduncle length | 0.288 | - 0.445 | -0.100 |
| Caudal-peduncle depth | 0.206 | -0.138 | -0.026 |
| Caudal-peduncle width | 0.169 | -0.237 | 0.862 |
| Dorsal-fin length | 0.197 | 0.375 | -0.025 |
| Pectoral-fin length | 0.187 | 0.241 | -0.118 |
| Pelvic-fin length | 0.176 | 0.144 | -0.124 |
| Anal-fin length | 0.199 | 0.381 | 0.014 |
| Upper caudal-lobe length | 0.162 | 0.259 | -0.031 |
| Predorsal length | 0.218 | -0.122 | -0.082 |
| Prepectoral length | 0.181 | 0.029 | -0.025 |
| Prepelvic length | 0.228 | -0.039 | -0.030 |
| Preanal length | 0.220 | -0.075 | -0.052 |
| Vent to anal-fin origin | 0.325 | - 0.242 | -0.216 |
| Pelvic-fin insertion to anal-fin origin | 0.256 | -0.130 | -0.059 |
| Snout length | 0.186 | 0.076 | 0.072 |
| Postorbital head length | 0.170 | -0.035 | -0.087 |
| Eye diameter | 0.180 | 0.035 | -0.023 |
| Interorbital width | 0.156 | 0.209 | 0.099 |
| Median caudal-ray length | 0.147 | -0.168 | -0.119 |
| Cumulative variance (%) | 64.6 | 19.6 | 7.4 |