Morphology Data of Oreonectes elongatus
Identification keys
Main Ref. Tang, L., Y. Zhao and C. Zhang, 2012
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
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

This species can be distinguished from its congeners by this set of characters: the most elongated body, body depth/SL 8.62-10.68% (vs. 11.70-16.55%); eyeless; caudal fin forked; well-developed adipose crests on caudal peduncle; body naked and de-pigmented. It is similar to O. translucens by lacking eyes and with forked caudal fin, but differs from the latter by the appearance of anterior nostril (long nostril tube and barbel of the anterior nostril, 18.6-26.3% HL) and caudal crests (adipose and not transparent) as well as more counts of vertebrae (4+38-39 vs. 4+32) (Ref. 88136).

Ease of Identification

Meristic characteristics of Oreonectes elongatus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
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
preanal 4 - 4
total 38 - 39


Dorsal fin(s)

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

Caudal fin


Anal fin(s)

Fins number
Spines total
Soft-rays total 7 - 7

Paired fins

Pectoral Attributes  
Soft-rays   10 - 10
Pelvics Attributes  
Soft-rays   6 - 6
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
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