Morphology Data of Rypticus nigripinnis
Identification keys
Abnormalities
Main Ref. McCarthy, L.V., 1979
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral short and / or deep
Cross section compressed
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
Type of scales
Diagnosis

Sides of body heavily marked with well-defined cream spots on dark background, extending onto head, cheeks and median fins; larger spots frequently ocellated; belly with articulated pattern, cream stripe on nape; dark band running laterally from lips to eye and continuing posteriorly to blend into background anterior to dorsal fin. Body and head, excluding lips and maxillary, with embedded scales. Dorsal spines 2 (rarely 3). Lower jaw not much projecting, lacking fleshy protuberance. Juvenile and adult with 4 large, distinct oval pores along preopercular margin and 4 pairs on ventral surface of lower jaw, except in > 6.5 cm SL specimens, most posterior pair may be divided into a few smaller pores (Ref. 40934).

Ease of Identification

Meristic characteristics of Rypticus nigripinnis

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 8 - 8
Vertebrae
preanal 10 - 10
total 24 - 24

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total 2 - 2
Soft-rays total 24 - 28
Adipose fin

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number
Spines total
Soft-rays total 14 - 18

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   15 - 15
Pelvics Attributes  more or less normal
Position    thoracic  before origin of D1
Spines     1
Soft-rays   5 - 5
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