| Main Ref. | Chen, Y.-Y. and H.-K. Mok, 2001 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | eel-like |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Diagnosis |
Body without scales. Long snout, 4.6 of TL. Long, strong, slender jaws; upper jaw length 8.2% of TL; upper jaw longer than lower one. Ventrolateral gill slits, below pectoral fin base. Anus far forward, one gape length behind the tip of pectoral fine. Lateral line nearly complete, length 95.6% of TL, with a tubelike groove connecting every other pair of lateral line pores. Number of cephalic lateralis pores: infraorbital 8; supraorbital 5; preoperculomandibular 9. |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | 24 - 24 |
| total | 130 - 130 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |