| Picture Used | Arana_u1.jpg |
| Size (cm) | 31.8 TL |
| Sesso | unsexed |
| Località | |
| Total length (TL) | 604 pixels |
| Standard length | 99.0 % TL |
| Fork length | 99.0 % TL |
| Pre-anal length | 55.6 % TL |
| Pre-dorsal length | 19.7 % TL |
| Pre-pelvic length | 0.0 % TL |
| Pre-pectoral length | 20.9 % TL |
| Body depth | 9.4 % TL |
| Head length (HL) | 19.4 % TL |
| Eye diameter | 24.8 % HL |
| Pre-orbital length | 21.4 % HL |
| Aspect ratio of caudal fin | |
| Remarks | Body eel-like; pelvic fin absent; dorsal and anal fins confluent to cauadal fin; CA and CH cannot be measured |
