Morphology Data of Chetia brevicauda
Identification keys
Abnormalities
Main Ref. Bills, I.R. and O.L.F. Weyl, 2002
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section
Dorsal head profile
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales
Diagnosis

Diagnosis: compressed and deep body with greatest body depth at origin of pelvic fins; head large, 39.4-41.0% SL; premaxillary pedicel of upper jaw slightly longer than dentigerous arm of premaxilla; sloping at an angle of 77° from horizon; dental arcade with 2 rows of closely set unicuspid teeth, 53 in outer row, 40 in inner; lower jaw relatively long with rounded dental arcade, and 2 rows of erect, slightly recurved and irregularly spaced unicuspid teeth, 37 in outer row, a few teeth in inner; 26-27 total dorsal fin rays; 12-13 total anal fin rays; pectoral fin relatively long, 25.0-28.4% SL, just reaching origin of anal fin; caudal peduncle short and deep; cycloid scales with a few weakly ctenoid scales on lower flanks; 20-22 upper and 10-12 lower lateral line scales; 6-7 scales between pelvic and pectoral fin bases; 5-7 scales between lateral line and origin of dorsal fin; 4-5 cheeck scale rows; 15 abdominal vertebrae; 14 caudal vertebrae (Ref. 52267).

Description: snout relatively long; frontal profile straight, sometimes slightly concave; caudal fin subtruncate (Ref. 52307).

Coloration: living coloration unknown (Ref. 52307). Preserved material: beige background colour, pigmented brown by a series of spots and lines; anterior head pigmented; mental and opercular blotches present; 3 poorly defined and broken lines along body: midlateral, dorsal lateral and dorsal medial bands; 6-7 short and indistinct vertical bars on body; belly and ventral flank unpigmented (Ref. 52267). Freshly preserved specimens: body silvery with some brownish shades in dorsal regions; diffuse horizontal and vertical bands; several small reddish-brown dots visible at base of caudal fin and in soft dorsal fin, often also in soft anal (Ref. 52307).

Ease of Identification

Meristic characteristics of Chetia brevicauda

Lateral Lines Interrupted: No
Scales on lateral line 31 - 32
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle 14 - 15
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 11 - 12
on upper limb
total 15 - 16
Vertebrae
preanal
total 29 - 29

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 14 - 15
Soft-rays total 11 - 13
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 9 - 10

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   
Pelvics Attributes  more or less normal
Position    thoracic  behind origin of D1
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Comments & Corrections
Back to Search
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17