Données morphologiques de Mastacembelus sanagali
Clés d'identification
Abnormalities
Réf. Princ. Vreven, E.J., 2008
Ressemble à
Bones in OsteoBase

Attributs sexuels

Organes spécialisés
Apparence différente
Couleurs différentes
Remarques

Caractéristiques descriptives des juvéniles et adultes

Éléments remarquables
Profil du corps eel-like
Section transverse
Profil dorsal de la tête
Type d'yeux
Type de bouche/museau
Position de la bouche
Type of scales
Diagnose

Diagnosis: head relatively long, 15.7-21.1% SL (mean 18.2%), decreasing with size; origin of first dorsal spine situated before posterior edge of pectoral fin, (-9.5)-(-0.5)% SL [mean (-6.3%)]; body relatively deep, 7.8-9.6% SL (mean 8.7%); distance from tip of snout to last externally visible dorsal spine 49.0-56.2% SL (mean 52.1%), decreasing with size; origin of soft dorsal fin clearly anterior to origin of soft anal fin; lower jaw length 21.3-26.9% HL (mean 23.9%), increasing with size; distance from gill opening to dorsal pectoral fin base relatively short, 4.3-9.6% HL (mean 6.9%); 23+1 to 25+1 (median 25+1) dorsal spines (Ref. 81678).

Description: 2-4 preopercular spines (median 2); 1 preorbital spine; preanal length 47.7-52.0% SL (mean 50.5%), decreasing with size; preanal length larger than postanal in small specimens becoming equal in length and even smaller in larger-sized specimens; postanal length 46.6-51.2% SL (mean 48.5%), increasing with size; distance from anterior border of snout to last externally visible dorsal spine shorter than distance from anterior border of snout to last externally visible anal spine; distance from anterior border of snout to last externally visible anal spine 53.4-59.6% SL (mean 56.4%), decreasing with size; 97 mean soft rays in dorsal fin, 87 in anal fin; difference between number of soft dorsal fin rays and number of soft anal fin rays (+1)-(+17) (mean +11); 11-13 caudal fin rays (mean 12); 5-7 predorsal vertebrae (mean 6); 32-33 abdominal vertebrae (mean 33); (+1)-(+4) in-between vertebrae (mean +2); 54-57 caudal vertebrae (mean 56), 88 mean total vertebrae (Ref. 81678).

Coloration: Preserved specimens: overall colour uniformly light brown; dorsal mid-line with a series of dark brown spots extending along dorsal, caudal and anal fin bases; dark brown lateral band originating at base of rostral appendage and continuing posteriorly on sides of body and tail as a series of large X-shaped blotches forming some more O-shaped blotches and a dark brown network on tail; lips, ventral surface of head and belly yellowish white with some dark brown bands or markings on belly; general colour of dorsal, caudal and anal fins whitish sometimes with a second, more or less continuous, ill-defined, dark brown band close to outer margin of unpaired fins; margin of unpaired fins whitish; pectoral fins whitish with or without some dark brown to black spots; unpaired fins darker in large specimens; colour pattern relatively variable (Ref. 81678). In life: palest parts of pectoral fins and anal fin vivid yellow or yellowish; overall colour of ventral surface

of head, body and tail light brown (Ref. 81678).

Facilité d'identification

Caractéristiques méristiques de Mastacembelus sanagali

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)
Total 86 - 90

Nageoires

Nageoire(s) dorsale(s)

Attributs continuous with caudal fin
Nombre de nageoires 1
Nombre de pinnules Dorsal   0
Ventral  0
Total d'épines 24 - 26
Total de rayons mous 89 - 103
Nageoire adipeuse absent

Nageoire caudale

Attributs confluent

Nageoire(s) anale(s)

Nombre de nageoires 1
Total d'épines
Total de rayons mous 80 - 93

Nageoires paires

Pectorale(s) Attributs  
Épines     
Rayons mous   
Pelvienne(s) Attributs  suppressed/absent
position    absent
Épines     
Rayons mous   
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Comments & Corrections
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