Morphology Data of Trichomycterus potschi
Identification keys
Abnormalities
Main Ref. Barbosa, M.A. and W.J.E.M. Costa, 2003
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 more or less straight
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

Posterior tip of posterior ceratohyal slender, its depth 2.3-6.5% of longitudinal length of the hyoid bar; ventroposterior process of posterior ceratohyal absent or vestigial (1.7%, or less when present, of longitudinal length of the hyoid bar); opercular patch of odontodes slender, its depth 44.0-73.7% of base length of opercular dorsal projection; first pectoral-fin ray 28.8-37.0% of pectoral-fin length); 7 pectoral fin rays; 8 branchiostegal rays; 14-15 pleural ribs; infraorbital sensory pores i1 and i3 present; supraorbital sensory pores s6 nearer to each other than to eye; dorsal-fin origin in vertical through centrum of 20th or 21st vertebra; anal-fin origin in vertical through centrum of 23rd or 24th vertebra; pelvic fins anteriorly placed; prepelvic length 53.9-57.8% SL; orbital diameter 6.7-7.5% of head length; head length 20.0-21.8% SL; interorbital width 28.1-30.8% of head length; caudal peduncle depth 13.8-15.3% SL; body width 9.7-12.3% SL; body depth 15.1-16.4% SL; dorsal-fin base 10.6-11.4% SL; anal-fin base 8.6-10.2% SL; and pectoral-fin length 9.9-12.5% SL (Ref. 52913).

Ease of Identification

Meristic characteristics of Trichomycterus potschi

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 37 - 39

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 11 - 12
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number
Spines total
Soft-rays total 9 - 10

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   7 - 7
Pelvics Attributes  
Position    abdominal  before origin of D1
Spines     
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Comments & Corrections
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17