Morphology Data of Labeo parvus
Identification keys
Abnormalities
Main Ref. Lévêque, C., 2003
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance different morphology in juveniles and adults
Different colors different colors in juveniles and adults
Remarks

Descriptive characteristics of juvenile and adult

Striking features striking type of mouth
Body shape lateral fusiform / normal
Cross section
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth sub-terminal/inferior
Type of scales cycloid scales
Diagnosis

Diagnosis: distal margin of dorsal fin concave; body depth 1.9-3.0x SL; depth of caudal peduncle 0.8-1.2x its length; 24-42 (50-150mm) and 41-44 (150-250mm) gill rakers; scale formula 4.5-5.5/33-38/6.5; 3-4 scales between lateral line and pelvic-fin base; 12-16 scales around caudal peduncle; 9-10 dorsal fin branched rays (Ref. 2940, 81282).

Description: body rather elongate; snout prominent and tuberculate; two pairs of rather short barbels; all specimens examined had 12 scales around caudal peduncle, except for populations from Ogun (14 and sometimes even 16 scales); dorsal fin with concave distal margin in adults and showing allometric growth, the longest ray growing proportionally faster than head length; D:III,(9)10; A:III,5; P:16-17; V:I,8 (Ref. 2940, 81282).

Coloration: back blackish or greyish-green, belly whitish; dark longitudinal band along middle of sides from gill cover to end of caudal peduncle, bordered in live specimens by light yellowish bands; fins tinged with yellowish-pink; the above colour pattern is characteristic for juveniles or medium-sized individuals; pale bands bordering dark mid-lateral band tend to disappear after death, as well as in large individuals which are more uniformly colored on sides (Ref. 2940, 81282).

Ease of Identification

Meristic characteristics of Labeo parvus

Lateral Lines 1 Interrupted: No
Scales on lateral line 33 - 38
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 4 - 6
Scale rows below lateral line 3 - 7
Scales around caudal peduncle 12 - 16
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 24 - 44
Vertebrae
preanal
total 29 - 31

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 12 - 13
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total
Soft-rays total 8 - 8

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   16 - 17
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     
Soft-rays   9 - 9
Back to Search
Comments & Corrections
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17