Morphology Data of Percina brucethompsoni
Identification keys
Abnormalities
Main Ref. Robison, H.W., R.C. Cashner, M.E. Raley and T.J. Near, 2014
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Moderate sexual dimorphism exists: males with deeper caudal peduncle, longer pelvic fins, deeper and wider heads and longer upper jaws; females with slightly larger eyes as shown by the ratios for eye length/head length and eye length/snout length.

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

A species of the subgenus Swainia but distinguished from all other species of Swainia by having the following combination of characters: snout depth is less than snout length; the ratio of snout length to SL is greater than 7.5%; more than 72 pored lateral line scales (mode 76-80); breast is unscaled or partially scaled in males and females; lateral pigmentation on body with 12 to 15 vertically elongated distinct blotches, with seven or more of these blotches between the insertion of the second dorsal fin and the hypural plate; and usually 12 branchiostegal rays (6 on each side).

Ease of Identification

Meristic characteristics of Percina brucethompsoni

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales 72 - 85
Scales in lateral series
Scale rows above lateral line 9 - 13
Scale rows below lateral line
Scales around caudal peduncle 27 - 32
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 10 - 11
on upper limb 2 - 3
total 12 - 13
Vertebrae
preanal
total 39 - 41

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 2
Finlets No. Dorsal   
Ventral  
Spines total 11 - 14
Soft-rays total 12 - 15
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number
Spines total 2 - 2
Soft-rays total 8 - 11

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   12 - 15
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Comments & Corrections
Back to Search
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17