Données morphologiques de Pachycara caribbaeum
Clés d'identification
Réf. Princ. Anderson, M.E., R. Somerville and J.T. Copley, 2016
Ressemble à
Bones in OsteoBase

Attributs sexuels

Organes spécialisés
Apparence différente
Couleurs différentes
Remarques

Caractéristiques descriptives des juvéniles et adultes

Éléments remarquables none
Profil du corps elongated
Section transverse
Profil dorsal de la tête clearly convex
Type d'yeux more or less normal
Type de bouche/museau more or less normal
Position de la bouche sub-terminal/inferior
Diagnose

Diagnosis: vertebrae 31–33 + 76–79 = 107–112;

pectoral fin rays 12–14; pelvic fin rudimentary,

rays 2; single mediolateral branch of the lateral

line system; scales present on nape and cheeks

(Ref. 112624).

Description: head ovoid, deeper than wide in

larger specimens than smallest, snout gently

sloping in all; scales cycloid, relatively

sparsely distributed in these juveniles, absent on

fins and pectoral base and axil; scales present in

nape to about 1 eye diameter posterior to eye in

smallest specimen, to interorbital area in others;

eye small, rounded, entering dorsal profile of

head in larger fish; gill slit moderate, reaching

ventrally to lower edge of pectoral base or just

below it; opercular lobe at dorsal margin of gill

slit slightly rounded posteriorly, extending

forward about 1 eye diameter; pectoral-fin origin

slightly below body midline, insertion on abdomen;

posterior margin of fin wedge-shaped, with rays 4–

6 from dorsalmost the longest; ventralmost rays

not noticeably thickened, no ray tips exserted;

mouth very slightly subterminal and oblique, upper

jaw extending posteriorly to middle of eye;

epidermal prickles absent on head; nostril tube

not reaching forward to upper lip; oral valve

reaching just posterior to anterior edge of vomer;

jaw teeth small, conical; premaxilla with single

row of teeth in smallest, 2-3 anterior rows

blending into single posterior row in larger

specimens; dentary with 3 rows of teeth anteriorly

blending into single posterior row in all;

vomerine teeth few in juveniles; palatine teeth in

single row, also relatively few; cephalic

lateralis system with no variation in pore counts;

2 postorbital pores; suborbital pores 6 + 0 on

both sides of all; 8 preoperculomandibular pores;

2 anterior supraorbital (nasal) pores, 1 set

anteromesial to nostril tube, the other

dorsoposteriorly; interorbital and occipital pores

absent; body lateral line system with single,

mediolateral branch originating just posterior to

postorbital pore 4, running to tail tip; no trace

of ventral or dorsolateral neuromasts; dorsal-fin

origin associated with vertebrae 7–8, with no free

pterygiophores; anal fin origin associated with

vertebrae 30–31 (ultimate precaudal), with 3–5

pterygiophores inserted anterior to haemal spine

of 1st caudal vertebra; last dorsal ray associated

with 4th preural vertebra, last anal ray

associated with 2nd preural vertebra; caudal fin

with 2 epural, 4 upper hypural and 4 lower hypural

rays; gill rakers short, those on upper limb

(epibranchial) acute, lower rakers

(ceratobranchial and hypobranchial) blunt, roughly

triangular; pseudobranchial filaments short and

slender; branchiostegal rays 4 + 2 (Ref. 112624).

Coloration: Fresh colouration: uniformly pinkish

white, edges of unpaired fins translucent; abdomen

bluish black, eye blue (Ref. 112624). In

preservative: dull whitish, orobranchial chamber

pale (Ref. 112624).

Facilité d'identification

Caractéristiques méristiques de Pachycara caribbaeum

Lignes latérales 1 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 0
Fentes branchiales (requins et raies uniquement)
Branchiospines
sur le membre inférieur
sur le membre supérieur
Total 13
Vertèbres
préanal(e)
Total 107 - 112

Nageoires

Nageoire(s) dorsale(s)

Attributs extending over most of the back length
Nombre de nageoires 1
Nombre de pinnules Dorsal   0
Ventral  0
Total d'épines
Total de rayons mous 99 - 104
Nageoire adipeuse absent

Nageoire caudale

Attributs pointed; confluent

Nageoire(s) anale(s)

Nombre de nageoires 1
Total d'épines
Total de rayons mous 77 - 82

Nageoires paires

Pectorale(s) Attributs  more or less normal
Épines     
Rayons mous   12 - 14
Pelvienne(s) Attributs  other (see Diagnosis)
position    jugular  before origin of D1
Épines     
Rayons mous   2
Réf. Princ. (ex. 9948)
Glossaire ( ex. cephalopods )
Entré par Hennyey, Andrea
Modifié par Hennyey, Andrea
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