| Main Ref. | Boyd, D.A., P. Nithirojpakdee, G. Deein, C. Vidthayanon, C. Grudpan, W. Tangjitjaroen, J.M. Pfeiffer, Z.S. Randall, T. Srisombat and L.M. Page, 2017 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks | Males with a longer, ramified first branched pectoral-fin ray. |
| Striking features | |
| Body shape lateral (shape guide) | elongated |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Acantopsis rungthipae is distinguished from all congeners by the combination of the following characters; absence of exposed labial barbels; upper margin of caudal-fin base usually with distinct small black spot; side of head with 0-1 row of large spots; absence of large black spots on dorsal or caudal fins; absence of black specks beneath midlateral row of black spots (rarely present); dorsal fin usually with 9½ branched rays and pectoral fin with 10 rays; 10-20 dark saddles along dorsal midline; 9-17 black spots on side of body; 41-43 total vertebrae; and body depth 9.0-14.2% SL, body width 5.3-10.3% SL, caudal-peduncle length 11.5-16.1% SL (Ref. 116755). |
| 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 | |
| total | 41 - 43 |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 9 - 10 |
| Adipose fin | absent |
| Attributes | forked |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays 9 - 11 | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines | |
| Soft-rays |