Morphology Data of Neoplecostomus botucatu
Identification keys
Abnormalities
Main Ref. Roxo, F.F., C. Oliveira and C.H. Zawadzki, 2012
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance always different morphology between mature adults
Different colors
Remarks The male has a papilla in the cloaca, and a membrane in the ventral fin, both of which are absent in the female. Males reach a greater length, as observed in paratypes.

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
Type of scales
Diagnosis

Distinguished from all species of the genus Neoplecostomus, except N. paranensis, due to the lack of, or reduction in size of, the adipose fin (vs. adipose fin moderate to well developed and always present). It can be separated from N. paranensis by the presence of conspicuous dark spots all over the body and the absence of some fins and dorsal bands (vs. lacking conspicuous dark spots and having five dark bands on dorsum evident). It further differs from N. paranensis by a greater head depth 55.6-63.9% in head length and greater mandibular width 12.5-17.8% in head length (vs. 44.4-55.4% and 8.4-12.4%, respectively) (Ref. 89726).

Description: adipose fin ill-developed and not always present; dorsal-fin with one flexible spine, followed by seven branched rays; anal fin with one flexible unbranched ray and five branched rays; pectoral fin with one spine and six branched rays; pelvic fin with one unbranched ray and five branched rays (Ref. 89726).

Ease of Identification

Meristic characteristics of Neoplecostomus botucatu

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line
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 first fin ray very elongated
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 1 - 1
Soft-rays total 7 - 7
Adipose fin

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total 0 - 0
Soft-rays total 6 - 6

Paired fins

Pectoral Attributes  
Spines     1
Soft-rays   6 - 6
Pelvics Attributes  
Position    before origin of D1
Spines     0
Soft-rays   6 - 6
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