| Main Ref. | Schmitter-Soto, J.J., 2017 |
| 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 |
Astyanax salvatoris is distinguished from other congeners in Oaxaca by following characters: anal-fin rays 20-22 (vs. 21-26); total gill rakers, mean 17 (vs. mean 22 or more in A. finitimus); anterior fontanel sharp-tipped (vs. blunt), long (vs. shorter in A. finitimus); in dorsal view, supraoccipital short, wide-based (vs. long, narrow-based in A. aeneus); 4 maxillary teeth, 2 larger followed by 2 smaller (vs. 1-3, all about same size); epibranchial III distal segment straight (vs. curved in A. finitimus); preopercular ventral rim, convex (vs. straight in A. aeneus); and predorsal elements irregularly expanded (Ref. 118583). |
| Ease of Identification |
| Lateral Lines | Interrupted: No |
| Scales on lateral line | 33 - 35 |
| Pored lateral line scales | |
| Scales in lateral series | |
| Scale rows above lateral line | 11 - 12 |
| Scale rows below lateral line | |
| Scales around caudal peduncle | 15 - 17 |
| Barbels | |
| Gill clefts (sharks/rays only) | |
| Gill rakers | |
| on lower limb | 10 - 11 |
| on upper limb | |
| total | |
| Vertebrae | |
| preanal | |
| total | 32 - 33 |
| Attributes | |
| Fins number | 1 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | 9 - 9 |
| Adipose fin | present |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total | 20 - 22 |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 12 - 12 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |