Morphology Data of Hemiodus iratapuru
Identification keys
Abnormalities
Main Ref. Langeani, F. and C.R. Moreira, 2013
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 elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth sub-terminal/inferior
Type of scales cycloid scales
Diagnosis

Can be diagnosed from Hemiodus quadrimaculatus group and from H. ternetz i, H. thayeria and H. tocantinenss by the presence of a midlateral round spot and absence of uninterrupted longitudinal dark stripe from the opercular margin to the base of the caudal fin. Differs from the species of the Hemiodus quadrimaculatus group by having the following characters: 43-46 perforated scales in the lateral line; eight or nine longitudinal series of scales above the lateral line; five longitudinal series of scales below the lateral line; 10-12 teeth on the upper jaw. Distinguished from other species of Hemiodus , except those mentioned above, by the form of the distal border of the multicuspid teeth (vertically elongate, forming an arrowhead v. teeth with border straight or convex). Differs from all congeners, except Hemiodus atranalis , by having the first branched dorsal-fin ray elongated in the largest specimens (v. lacking such elongation) (Ref. 93237).

Ease of Identification

Meristic characteristics of Hemiodus iratapuru

Lateral Lines Interrupted: No
Scales on lateral line 43 - 46
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 8 - 9
Scale rows below lateral line
Scales around caudal peduncle
Barbels
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
Soft-rays total 10 - 11
Adipose fin present

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total 10 - 12

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   18 - 22
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     
Soft-rays   10 - 11
Back to Search
Comments & Corrections
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17