Morphology Data of Oreonectes anophthalmus
Identification keys
Abnormalities
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 A single specimen with genital papilla located immediately posterior to the anus; gonad of males opens at the end of a fleshy prominence (Ref. 75196).

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 sub-terminal/inferior
Type of scales
Diagnosis

Differs from all members of the genus Oreonectes by the absence of eyes, pelvic fin with 4 branched rays and caudal fin with 12 branched rays (Ref. 75196). Dorsum of head flat; entire body without scales and no color; absence of cephalic lateral-line system; caudal fin truncate (Ref. 75196). Anterior section of body strong and long, cylindraceous but slightly depressed, posterior part compressed; head wide and rounded, depressed; barbels 3 pairs, rostral one 2 pairs and maxillary one 1 pair. Dorsal fin located rather backward and its origin opposite behind base of pelvic fin (Ref. 45563).

Description: D ii,7; A ii,5; P i+10; V i+4 (Ref. 75196).

Ease of Identification

Meristic characteristics of Oreonectes anophthalmus

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
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

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

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number
Spines total
Soft-rays total 7 - 7

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   11 - 11
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Spines     
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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