Morphology Data of Cyphocharax biocellatus
Identification keys
Abnormalities
Main Ref. Vari, R.P., B.L. Sidlauskas and P.-Y. Le Bail, 2012
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 eyes with fixed fatty (adipose) tissue/eyelids
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Can be diagnosed from all congeners by the possession in all but the smallest examined specimens of a midlateral spot of dark pigmentation in the region ventral to the dorsal fin, with the spot when present ranging in intensity from a diffuse concentration of dark chromatophores in smaller specimens to a distinct black spot in the larger examined individuals. Can be further separated from many congeners by its pigmentation features which include the presence of a dark, midlateral somewhat longitudinally-ovoid spot on the posterior portion of the caudal peduncle and scales overlying the basal portions of the middle caudal-fin rays; the absence of a series of dark stripes running between the scale rows; the lack of a patch of dark pigmentation on the dorsal fin; the hyaline or lightly speckled adipose fin. Further differs meristically from various other congeners in the number of lateral line scales 29 to 31; the number of scales above the lateral line 5; the number of scales below the lateral line 4 or 5, and the number of vertebrae 31 or 32 (Ref. 90234).

Ease of Identification

Meristic characteristics of Cyphocharax biocellatus

Lateral Lines Interrupted: No
Scales on lateral line 29 - 31
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 5 - 5
Scale rows below lateral line 4 - 5
Scales around caudal peduncle
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total 31 - 32

Fins

Dorsal fin(s)

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

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total 10 - 10

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   13 - 14
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     
Soft-rays   9 - 10
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