Morphology Data of Trachycorystes menezesi
Identification keys
Abnormalities
Main Ref. Britski, H.A. and A. Akama, 2011
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Deferent canal runs in front of the anal-fin first unbranched rays in males. Urogenital aperture positioned at tip of first branched ray in males (vs. urogenital aperture of females opens at distal end of a very small papilla located just in front of anal-fin origin).

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth terminal
Type of scales
Diagnosis

Diagnosed from Trachycorystes trachycorystes by having the following characters: jaws equal in length (vs. lower jaw longer, prognathous in Trachycorystes trachycorystes); skull roof covered by thick integument concealing bony sculptures (vs. skull roof covered by thin integument, bony sculptures visible); inner mental barbel thin and very short, not reaching base of outer mental barbel (vs. inner mental barbel thicker, extending to or beyond base of outer mental barbel); dorsal-fin spine serrated only along posterior margin (vs. dorsal-fin spine serrated only along anterior margin); caudal fin weakly forked (vs. emarginate); gas bladder simple, without diverticula (vs. gas bladder with

three posterior diverticula, one medial and paired posterolateral) (Ref. 87314).

Ease of Identification

Meristic characteristics of Trachycorystes menezesi

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 41 - 41

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 1 - 1
Soft-rays total 6 - 6
Adipose fin present

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total 19 - 22

Paired fins

Pectoral Attributes  more or less normal
Spines     1
Soft-rays   7 - 7
Pelvics Attributes  more or less normal
Position    abdominal  behind origin of D1
Spines     
Soft-rays   9 - 9
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