Main Ref. | Garavello, J.C.I. and F.A.A. Sampaio, 2010 |
Appearance refers to | |
Bones in OsteoBase |
Specialized organs | |
Different appearance | |
Different colors | |
Remarks | Anal-fin and pelvic-fin hooks present only in small specimens and only in males to 60.5 mm SL. Females larger than males; snout length and body depth proportionally larger in females. Males with larger orbital diameter, length of anal, pectoral and pelvic fins. |
Striking features | |
Body shape lateral | short and / or deep |
Cross section | |
Dorsal head profile | |
Type of eyes | |
Type of mouth/snout | |
Position of mouth | |
Type of scales | |
Diagnosis |
This species is distinguished from all its congeners from Rio IguaƧu by the following set of characters: third infraorbital deep and not in contact with preopercle, leaving an narrow naked area between its border and preopercle; premaxillary external series with 4-6, usually 5 or 6 pentacuspid or heptacuspid teeth; first branchial arch 9-12, usually 10 rakers in upper branch and 13-16, usually 14 or 15 rakers in lower branch; a narrow and elongated vertical humeral bar (Ref. 85756). |
Ease of Identification |
Lateral Lines | Interrupted: No |
Scales on lateral line | |
Pored lateral line scales | 36 - 39 |
Scales in lateral series | |
Scale rows above lateral line | 6 - 7 |
Scale rows below lateral line | 5 - 6 |
Scales around caudal peduncle | 15 - 17 |
Barbels | |
Gill clefts (sharks/rays only) | |
Gill rakers | |
on lower limb | |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total |
Attributes | |
Fins number | |
Finlets No. | Dorsal |
Ventral | |
Spines total | |
Soft-rays total | 8 - 10 |
Adipose fin |
Attributes |
Fins number | |
Spines total | |
Soft-rays total | 16 - 23 |
Pectoral | Attributes |
Spines 1 | |
Soft-rays 10 - 14 | |
Pelvics | Attributes |
Position | |
Spines | |
Soft-rays 7 - 8 |