| Main Ref. | Eakin, R.R., E. Riginella and M. La Mesa, 2015 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | |
| Cross section | oval |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
This species is distinguished from its congeners by the following characters: with a very long, slender mental barbel (about 25-26 % SL, measurements from holotype and photograph of lost aboard ship specimen) vs. about 4-14 % SL (A. glareobarbatus has the second longest barbel, ranging from about 11-14 % SL and with an inconspicuous terminal expansion (14.7 % of barbel length in holotype) composed of short, blunt processes; anal fin rays 16-17; second dorsal fin rays 26; vertebrae 37; tubular upper lateral-line scales 7-8 (Ref. 117898). |
| 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 | 14 - 14 |
| total | 37 - 37 |
| Attributes | |
| Fins number | 2 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | 3 - 3 |
| Soft-rays total | 26 - 26 |
| Adipose fin |
| Attributes |
| Fins number | 1 |
| Spines total | |
| Soft-rays total | 16 - 17 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 18 - 18 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |