| Main Ref. | Stevenson, D.E. and C.P. Kenaley, 2013 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral | short and / or deep |
| Cross section | compressed |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
This species is distinguished by the following characters: vertebrae 14-16 + 22-24 = 36-39; dorsal-fin rays 31-35; anal-fin rays 20-22; further distinguished from all congeners, except P. paucus and P. pietschi, by having laterally flattened, bladelike ventral procurrent caudal rays, and an anteriorly directed hook-like process on the third posteriormost ventral procurrent caudal ray (Ref. 94277). |
| 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 | 12 - 15 |
| on upper limb | 5 - 8 |
| total | 18 - 22 |
| Vertebrae | |
| preanal | 14 - 16 |
| total | 36 - 39 |
| Attributes | |
| Fins number | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 31 - 35 |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total | 20 - 22 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 17 - 18 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |