Morphology Data of Acestrocephalus stigmatus
Identification keys
Abnormalities
Main Ref. Menezes, N.A., 2006
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 fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Distinguished from all species of Acestrocephalusexcept Acestrocephalus boehlkei and Acestrocephalus maculosus by having a dark humeral blotch. Differs from Acestrocephalus boehlkei in having fewer anal-fin rays 29-31 (vs. 34-36) and fewer

scale rows around caudal peduncle 22-23 (vs. 25); and from Acestrocephalus maculosus in having more anal-fin rays 29-31 (vs. 25-27). The muscular hiatus of the pseudotympanum in Acestrocephalus stigmatus is narrower than that of Acestrocephalus boehlkei, but much more developed than that of Acestrocephalus

maculosus (Ref. 75890).

Description: Dorsal fin ii,9; Anal fin iv,29-31; Pectoral fin i+13-14; Pelvic fin i+7 (Ref. 75890).

Ease of Identification

Meristic characteristics of Acestrocephalus stigmatus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales 70 - 74
Scales in lateral series
Scale rows above lateral line 13 - 14
Scale rows below lateral line 11 - 12
Scales around caudal peduncle 22 - 23
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 5 - 6
Vertebrae
preanal
total 38 - 39

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 11 - 11
Adipose fin present

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total 33 - 35

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   14 - 15
Pelvics Attributes  
Position    abdominal  behind origin of D1
Spines     
Soft-rays   8 - 8
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