Morphology Data of Oreonectes polystigmus
Identification keys
Main Ref. Du, L.-N., X.-Y. Chen and J.-X. Yang, 2008
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Males: genital papilla located immediately posterior to anus; gonads opens at end of fleshy prominence.

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth sub-terminal/inferior
Type of scales

Diagnosed by the following characters: anterior and posterior nostrils separated by short distance; anterior nostril elongated into barbel-like structure; tip of anterior nostril extending middle of posterior nostril; caudal fin rounded; body and belly completely with scales; incomplete lateral line with 6-8 pores; cephalic lateral-line system with 7 supraorbital, 4 +7 infraorbital pores; exhibits sexual dimorphism with males having genital papilla located immediately posterior to anus; gonads opens at end of fleshy prominence (Ref. 75196).

Description: D iii,6-7; A ii,5; P i+10; V i+6 (Ref. 75196).

Ease of Identification

Meristic characteristics of Oreonectes polystigmus

Lateral Lines Interrupted: No
Scales on lateral line 6 - 8
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels 6
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 34 - 37


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total 9 - 10
Adipose fin

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number
Spines total
Soft-rays total 7 - 7

Paired fins

Pectoral Attributes  
Soft-rays   11 - 11
Pelvics Attributes  
Position    abdominal  before origin of D1
Soft-rays   7 - 7
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