Morphology Data of Nannocharax intermedius
Identification keys
Abnormalities
Main Ref. Vari, R.P., 2007
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral elongated
Cross section
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 sub-terminal/inferior
Type of scales
Diagnosis

Diagnosis: 46-50 lateral line scales, pored except for 1-2 terminal scales; 7-9 branched anal fin rays; tip of pelvic fin falling short of, or barely extending to rear of, vent; dorsal portions of body with distinct dark, vertically oriented dark marks that form saddle-shaped pigmentation pattern; dark pigmentation on body extending distinctly below horizontal through base of pectoral fin in form of relatively narrow, vertical bars; adipose fin unpigmented (Ref. 81638).

Description: body depth 0.16-0.19 SL, ventrally somewhat flattened along underside of head and chest; mouth barely subterminal; anterior head profile approximately equal dorsally and ventrally or slightly more pronounced dorsally; mouth barely subterminal, premaxilla with 5 teeth; maxilla edentulous; dentary with 5, rarely 4, teeth; lower jaw moderate, with width posteriorly equal to approximately one-half orbital height in larger specimens; middle pelvic rays in many larger specimens somewhat longer than adjoining rays; body scales ctenoid and of moderate size; 4-5 scales below lateral line to anal fin origin; D: II-III,10-12; A: II-III,7-9 (Ref. 81638).

Coloration: ground color tan, snout and dorsal portion of head variably dusky in preserved specimens; scattered pigmentation on dorsal portion of opercle; scales of dorsal portion of body outlined with dark chromatophores, more so in larger individuals; dorsal portion of body with 11-13 dark, saddle-shaped marks; lateral surface of body with 14-16 vertical bars of irregular form that extend slightly ventral of horizontal through base of insertions of pectoral fin along most of body, but reach to ventral mid-line in region posterior of origin of anal fin; dorsally positioned, dark, saddle-shaped marks sometimes contiguous with dark vertical bars (Ref. 81638). Details on fin coloration can be found in Ref. 81638.

Ease of Identification

Meristic characteristics of Nannocharax intermedius

Lateral Lines 1 Interrupted: No
Scales on lateral line 46 - 50
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 5 - 6
Scale rows below lateral line
Scales around caudal peduncle
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 0 - 0
Soft-rays total 12 - 15
Adipose fin present

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 9 - 12

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   
Pelvics Attributes  more or less normal
Position    abdominal  beneath origin of D1
Spines     0
Soft-rays   8 - 9
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