Morphology Data of Bryconaethiops microstoma
Identification keys
Abnormalities
Main Ref. Paugy, D. and S.A. Schaefer, 2007
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance always different morphology between mature adults
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral fusiform / normal
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 terminal
Type of scales
Diagnosis

Diagnosis: 6.5-7.5 scales in transverse row between lateral line and dorsal fin origin; 12 scales around caudal peduncle (Ref. 74421, 80290); 35-40 (Ref. 80290) or 34-41 (Ref. 74421) lateral line scales. Eye diameter/head length 26-40% (Ref. 80290) or 31.4-43.8 (Ref. 74421). 15-20 (Ref. 80290) or 17-19 (Ref. 74421) anal fin branched rays.

Description: body rather robust; dorsal fin placed distinctly in front of pelvic fin insertion (Ref. 80290). Dorsal fin with 2 unbranched and 8 branched rays; anal fin with 3 unbranched and 17-19 branched rays (Ref. 74421). 11-19 (Ref. 80290) or 15-21 (Ref. 74421) gill rakers on lower limb of first gill arch; 14-15 (Ref. 80290) or 12-18 (Ref. 74421) on upper.

Coloration: ground color silvery; dorsum dark green, belly lighter and whitish; fins whitish and unpigmented (Ref. 80290).

Ease of Identification

Meristic characteristics of Bryconaethiops microstoma

Lateral Lines 1 Interrupted: No
Scales on lateral line 34 - 41
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 6.5 - 7.5
Scale rows below lateral line 3.5 - 4.5
Scales around caudal peduncle 12 - 12
Barbels 0
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 11 - 21
on upper limb 12 - 18
total 28 - 40
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes other
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 0 - 0
Soft-rays total 10 - 10
Adipose fin present

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 18 - 23

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     
Soft-rays   
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