Morphology Data of Atelomycterus marnkalha
Identification keys
Abnormalities
Main Ref. Jacobsen, I.P. and M.P. Bennett, 2007
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
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales placoid scales
Diagnosis

This relatively small species (up to 49 cm TL) is distinguished by the following set of characters: a relatively long snout, preoral length 4.7-5.1% TL; head length 19.3-19.9% TL, precaudal length 79.7-82.6% TL; short interdorsal space 12.2-13.9% TL; anal fin height 2.5-3.0% TL; comparatively long anal fin length 9.7-10.8 % TL and anal fin base-length 8.2-9.1% TL; adult claspers elongate, broad base, tapering moderately from base to tip; adult male claspers with outer length 7.2-9.0% TL, clasper base width 20.2-22.5% of clasper outer length; clasper glans covering more than half length of entire clasper; enlarged tab on cover rhipidion, which is moderately large, concealed predominantly by large cover rhipidion and exorhipidion; pseudosiphon over half length of cover rhipidion; large pseudopera; narrow clasper tip and of moderate width, bluntly pointed. Total vertebral 147-153 (N=16); precaudal counts 95–99 (n=16). Color pattern dominated by broad brownish saddles and transverse bands on tan/light brown background; prominent dark brown to black spots and white spots on dorsal and lateral surfaces.; dark brown to black spots concentrated predominantly on saddle margins and as irregular transverse lines in inter-saddle spaces; decreasing in number post second dorsal fin; significant numbers of small to medium sized white spots are found along entire length of animal; white spots increasing in concentration towards posterior end of animal (Ref. 75152).

Comparison: this species has posteroventally sloping dorsal fins; lower precaudal vertebrae count and smaller adult size when compared to A. baliensis, A. marmoratus and A. macleayi; it differs from A. fasciatus, the species with the most morphological similarities, in having a larger anal fin, lateral denticles with prominent shallow depressions, claspers of adult males with a cover rhipidion without an obvious notch and with prominent white spots and fewer, smaller black spots (Ref. 75152).

Ease of Identification

Meristic characteristics of Atelomycterus marnkalha

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

Fins

Dorsal fin(s)

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

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
Modified by Bailly, Nicolas
Checked by Jacobsen, Ian P.
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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