Main Ref. | Hoese, D.F. and A.L. Stewart, 2012 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | |
Different appearance | |
Different colors | |
Remarks | Considerable sexual dimorphism shown with males average a larger size than for females (mean = 19.3 mm SL for males and 15.9 mm SL for females, with 80% of the females between 14 and 17 mm SL versus 60% of males between 18 and 21 mm SL); males are less numerous, with females being 1.5 more abundant than males (Taru & Sunobe, 2000 noted an average F:M ratio of 1.4 for the related species, Eviota abax); males typically have first two dorsal spines filamentous vs. females usually with only the anterior spine slightly prolonged; males are generally more heavily pigmented (colour and filamentous spine differences may relate primarily to the larger size of males (Ref. 93112). |
Striking features | |
Body shape lateral | elongated |
Cross section | oval |
Dorsal head profile | |
Type of eyes | |
Type of mouth/snout | |
Position of mouth | |
Type of scales | |
Diagnosis |
This species is distinguished from its congeners by the following set of characters: D usually VI + I,10; A usually I,8; most pectoral-fin rays branched; cephalic sensory-pore system pattern 1 (terminal lateral canal pore present); males with first dorsal spine filamentous, base of pectoral fin with 2 spots (darker than body color or much lighter than body color), lower spot usually smaller than upper and sometimes obscure; 4 segmented pelvic-fin rays plus a rudimentary fifth ray present, pelvic rays partly separated, connected about one-third to one half between segmented rays 2-4 and almost completely connected to tip between spine and first ray; rudimentary fifth pelvic ray bound in membrane to fourth ray; subcutaneous bars on lower trunk behind anus usually lacking in preserved adults; nasal tubes short, tips of tubes with thin black ring, dorsal, anal and caudal fins usually grey to black; dorsal fin with some light spots; vertebrae usually 26 (Ref. 93112). Dorsal to anal fin-ray formula 10/8 (Ref. 116739). |
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 | 10 - 10 |
total | 26 - 26 |
Attributes | |
Fins number | 2 |
Finlets No. | Dorsal |
Ventral | |
Spines total | 7 - 7 |
Soft-rays total | 9 - 10 |
Adipose fin |
Attributes |
Fins number | 1 |
Spines total | 1 - 1 |
Soft-rays total | 8 - 9 |
Pectoral | Attributes |
Spines | |
Soft-rays 16 - 18 | |
Pelvics | Attributes |
Position | |
Spines 1 | |
Soft-rays 4 - 4 |