| Main Ref. | Havird, J.C. and L.M. Page, 2010 |
| Appearance refers to | |
| Bones in OsteoBase |
| Specialized organs | |
| Different appearance | |
| Different colors | |
| Remarks |
| 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 |
Lepidocephalichthys alkaia is distinguished from all other Lepidocephalichthys by a midlateral dark stripe on caudal fin, extending from base to terminus of fin, usually spanning rays 7–10. It is further distinguished from all Lepidocephalichthys by the combination of a truncated or rounded caudal fin; scales absent on top of head; usually dark stripe, sometimes dark spots on side; dorsal-fin origin just posterior to pelvic-fin origin; 8–10 predorsal, 8–10 postdorsal, dark bars on dorsum; moderate size (to 38 mm SL) (Ref. 83671). |
| 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 | |
| Finlets No. | Dorsal |
| Ventral | |
| Spines total | |
| Soft-rays total | |
| Adipose fin |
| Attributes |
| Fins number | |
| Spines total | |
| Soft-rays total |
| Pectoral | Attributes |
| Spines | |
| Soft-rays | |
| Pelvics | Attributes |
| Position | |
| Spines | |
| Soft-rays |