Morphology Summary - Birdsongichthys rectus
Morphology Data of Birdsongichthys rectus
Identification keys
Abnormalities
Main Ref. Tornabene, L., R. Manning, D.R. Robertson, J.L. Van Tassell and C.C. Baldwin, 2022
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  (shape guide) elongated
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished by having the following characters: possesses all taxonomic characters present in most members of the Gobiosomatini and the Gobiosoma group: D1 VII; dorsal pterygiophore insertion pattern 3-221110; vertebrae: precaudal 11 + 27 and caudal 16; hypurals 1 and 2 fused to some extent with hypurals 3 and 4 and the terminal vertebral element; epural 1; no ventral postcleithrum; pelvic fins separate, no anterior frenum connecting spines, no membrane connecting innermost rays absent or weakly developed; pelvic-fin rays 1-5 unbranched and without fleshy or flattened tips; pelvic-fin rays are long, extending posteriorly to a point between middle or end of anal fin; side of body covered with ctenoid scales, including two modified basicaudal scales; anal-fin pterygiophores 2 inserted before first haemal spine; with cephalic sensory canals; D2 I,9; A I,8. Colouration: body with three horizontal series of bright yellow spots, one along dorsal midline, one along lateral midline and one along ventral midline; anterior profile of head with gradual slope, it is not blunt or nearly vertical; eye large (~8.3-10.6% SL) (Ref. 130191).

Ease of Identification

Meristic characteristics of Birdsongichthys rectus

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 11 - 11
total 28 - 28

Fins

Dorsal fin(s)

Attributes
Fins number 2
Finlets No. Dorsal   
Ventral  
Spines total 8 - 8
Soft-rays total 9 - 9
Adipose fin

Caudal fin  (shape guide)

Attributes

Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 8 - 8

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   16 - 18
Pelvics Attributes  
Position    
Spines     
Soft-rays   5 - 5
(e.g. 9948)
(e.g. oophagy)
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