Réf. Princ. | Hoese, D.F. and A.L. Stewart, 2012 |
Ressemble à | |
Bones in OsteoBase |
Organes spécialisés | |
Apparence différente | |
Couleurs différentes | |
Remarques | 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). |
Éléments remarquables | |
Profil du corps | elongated |
Section transverse | oval |
Profil dorsal de la tête | |
Type d'yeux | |
Type de bouche/museau | |
Position de la bouche | |
Type of scales | |
Diagnose |
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). |
Facilité d'identification |
Lignes latérales | Interrompu(e)(s): No |
Écailles sur la ligne latérale | |
Écailles perforées de la ligne latérale | |
Écailles en série latérale | |
Rangées d'écailles au-dessus de la ligne latérale | |
Rangées d'écailles au-dessus de la ligne latérale | |
Écailles autour du pédoncule caudal | |
Barbillons | |
Fentes branchiales (requins et raies uniquement) | |
Branchiospines | |
sur le membre inférieur | |
sur le membre supérieur | |
Total | |
Vertèbres | |
préanal(e) | 10 - 10 |
Total | 26 - 26 |
Attributs | |
Nombre de nageoires | 2 |
Nombre de pinnules | Dorsal |
Ventral | |
Total d'épines | 7 - 7 |
Total de rayons mous | 9 - 10 |
Nageoire adipeuse |
Attributs |
Nombre de nageoires | 1 |
Total d'épines | 1 - 1 |
Total de rayons mous | 8 - 9 |
Pectorale(s) | Attributs |
Épines | |
Rayons mous 16 - 18 | |
Pelvienne(s) | Attributs |
position | |
Épines 1 | |
Rayons mous 4 - 4 |