Morphology Data of Grallenia lauensis
Identification keys
Abnormalities
Main Ref. Allen, G.R. and M.V. Erdmann, 2017
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks One of the two non-type specimens (NTM S.11061-016, Fig. 15A) from One Tree Island on the southern Great Barrier Reef is a male, which has a typical pointed urogenital papilla and with a filamentous first dorsal-fin spine that extends nearly to the base of the last segmented dorsal-fin ray when adpressed. Female urogenital papilla is broad and flattened with a circular outline, the posterior margin is fringed with several enlarged tubercles.

Descriptive characteristics of juvenile and adult

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

This species is distinguished by the following characters: D VI + I,7; A I,7; all segmented dorsal- and anal-fin rays are unbranched; pectoral-fin rays 15, all rays unbranched except the middle 2-4; posterior longitudinal scales 8-12, mainly restricted to caudal peduncle; no scales on anterior body; body depth at pelvic-fin origin 15.1-15.7% SL; depth at anal-fin origin 12.9-13.2% SL; with cephalic sensory-canal pores; live colour of female mainly translucent with faint markings, including 5, progressively shorter, orange-brown, dash-like marks overlying vertebral column, about 10-12 narrow orange bars on the back between level of pectoral-fin base and caudal-fin base, and 5-6 widely-spaced, brown-to-orange spots on lower side between middle of abdomen and caudal-fin base; male colour unknown (Ref. 116128).

Ease of Identification

Meristic characteristics of Grallenia lauensis

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 5 - 5
on upper limb 0 - 0
total 5 - 5
Vertebrae
preanal
total 27 - 27

Fins

Dorsal fin(s)

Attributes
Fins number 2
Finlets No. Dorsal   
Ventral  
Spines total 7 - 7
Soft-rays total 7 - 7
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 7 - 7

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   15 - 15
Pelvics Attributes  
Position    
Spines     1
Soft-rays   5 - 5
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