| Main Ref. | Freyhof, J., M.F. Geiger and S. Zogaris, 2026 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| Striking features | |
| Body shape lateral (shape guide) | elongated |
| Cross section | oval |
| Dorsal head profile | |
| Type of eyes | |
| Type of mouth/snout | |
| Position of mouth | |
| Type of scales | |
| Diagnosis |
This species differs Economidichthys pygmaeus by the first dorsal fin in male having a large black blotch on the membrane between ray 5 and 6 and behind ray 6 (vs. absent or very poorly developed); the perianal organ is not flanking the urogenital papilla (vs. flanking anterior part); its length 18–33 % of the distance between genital papilla and pelvic-disc origin (vs. 37-45 %), and the back scaleless along the base of posteriormost rays of the second dorsal fin (vs. scaleless until about middle of second dorsal fin); differs from E. trichonis by the absence of distinct black bars on the flank in the nuptial male (vs. present), and the flank covered by several rows of overlapping scales (vs. one row of non-overlapping scales) (Ref. 138563). |
| 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 |
| Attributes | |
| Fins number | 2 |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes |
| Spines | |
| Soft-rays 17 - 18 | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays 6 - 6 |