";} } ?> Morphology Summary - Rineloricaria longicauda
Morphology Data of Rineloricaria longicauda
Identification keys
Main Ref. Rodriguez, M.S. and R.E. Reis, 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

It possesses the characters of the sandy group and it can be diagnosed within the species of the sandy group by having the following characters: elongate naked area at tip of snout reaching the most anterior pore of the infraorbital sensory canal (vs. oval naked area at tip of snout, not reaching the most anterior pore of the infraorbital sensory canal in Rineloricaria quadrensis, Rineloricaria misionera, and Rineloricaria strigilata); plain, light brown background color (vs. with numerous dark and vermiculated spots on a light brown background in Rineloricaria strigilata); shallower body, depth at anal-fin origin 6.0-7.4 (vs. 7.9-9.4% SL in specimens above 10 cm SL in Rineloricaria cadeae); dorsal caudal-fin unbranched ray not prolonged (vs. dorsal caudal-fin unbranched ray produced as a short filament in Rineloricaria catamarcencis); usually with three series of plates between the lateral abdominal plates (vs. four of five series in Rineloricaria catamarcensis and Rineloricaria felipponei); comparatively larger plates covering the pectoral girdle, usually 5-6 plates versally and usually three series of plates between the lateral abdominal plates (vs. many small platelets covering the pectoral girdle, usually more than 15 platelets, and four of five series of plates between the lateral abdominal plates in Rineloricaria pareiacantha and Rineloricaria thrissoceps) (Ref. 75788).

Ease of Identification

Meristic characteristics of Rineloricaria longicauda

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


Dorsal fin(s)

Fins number 1
Finlets No. Dorsal   
Spines total
Soft-rays total
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Pelvics Attributes  
Position    abdominal  before origin of D1
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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