| Main Ref. | Knight, J.D.M. and R.G. Kumar, 2015 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | fusiform / normal |
| Cross section | |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
Oreichthys duospilus is distinguished from its congeners by a combination of the following characters: 22-23+1 scales in the longitudinal series with 11-21 pored scales; ½3/1/2½ scales in the transverse row; 7-9 predorsal scales; two black spots, one on the dorsal fin and the other on the anal fin; and a faint black spot may be seen on the caudal fin base, which may not be consistent (Ref. 99423). Description: Dorsal-fin rays iii, 9; anal-fin rays ii, 7; pectoral-fin rays i,11; pelvic-fin rays i, 8 (Ref. 99423). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | |
| Pored lateral line scales | 11 - 21 |
| Scales in lateral series | |
| Scale rows above lateral line | |
| Scale rows below lateral line | |
| Scales around caudal peduncle | |
| Barbels | 0 |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | |
| on upper limb | |
| total | 0 - 0 |
| Vertebrae | |
| preanal | |
| total |
| Attributes | no striking attributes |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 12 - 12 |
| Adipose fin | absent |
| Attributes | forked |
| Fins number | |
| Spines total | |
| Soft-rays total | 7 - 7 |
| Pectoral | Attributes more or less normal |
| Spines | |
| Soft-rays 12 - 12 | |
| Pelvics | Attributes more or less normal |
| Position abdominal behind origin of D1 | |
| Spines | |
| Soft-rays 9 - 9 |