Morphology Data of Oreonectes retrodorsalis
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

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
Type of scales

Distinguished from other species by having the following characters: head compressed; eyes present; dorsal-fin origin behind the pelvic-fin origin; entire body and belly covered by scales; incomplete lateral line with 3-4 pores; cephalic lateral-line system reduced, with only 2+4 infraorbital pores; caudal fin emarginate (Ref. 75196).

Description: D iv,7; A iv,5; P i+10; V i+7 (Ref. 75196).

Ease of Identification

Meristic characteristics of Oreonectes retrodorsalis

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales 3 - 4
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total 11 - 11
Adipose fin

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number
Spines total
Soft-rays total 9 - 9

Paired fins

Pectoral Attributes  
Soft-rays   11 - 11
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Soft-rays   8 - 8
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17