Morphology Data of Glyptothorax igniculus
Identification keys
Main Ref. Ng, H.H. and S.O. Kullander, 2013
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

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 sub-terminal/inferior

Can be diagnosed from other species of Glyptothorax in the Irrawaddy River drainage by its thoracic adhesive apparatus, in which the central depression is almost completely enclosed posteriorly by the skin ridges that make up the apparatus, instead of open caudally or, in G. burmanicus, completely closed. Further differs from G. burmanicus in having a larger eye (diameter 10.4-12.7% HL vs. 6.3-10.0), a longer dorsal-fin spine (16.9-21.6% SL vs. 11.9-14.7), and shorter prepectoral (17.1-21.7% SL vs. 22.3-25.4) and prepelvic lengths (47.0-51.3% SL vs. 52.8-59.4). Distinguished from other congeners by having the following combination of diagnostic characters: dorsal-fin spine length 16.9-21.6% SL; dorsal-to-adipose distance 19.8-24.6% SL; body depth at anus 15.2-16.4% SL; caudal peduncle depth 8.2-9.7% SL; total vertebrae 35-36; head width 20.3-21.8% SL; rounded tubercles on the dorsal surface of the head; almost uniform body; nasal barbel length 30.1-35.5% HL; lack ridges of the thoracic adhesive apparatus extending onto the gular region; head length 25.3-28.2% SL; predorsal distance 35.6-37.4% SL; postadipose distance 18.8-20.8% SL; and adipose-fin base length 13.9-15.8% SL; the depressed central in the thoracic adhesive apparatus lanceolate; with a single, non-diverging series of striae running along its edges; anal-fin base length 14.1-17.8% SL; pectoral-fin length 21.2-26.1% SL; lacking plicae on the ventral surfaces of the first pectoral- and pelvic-fin elements; and lacking both a distinct pale midlateral stripe on the body and distinct dark submarginal stripe along each lobe of the caudal fin (Ref. 93787).

Ease of Identification

Meristic characteristics of Glyptothorax igniculus

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 8
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 35 - 36


Dorsal fin(s)

Fins number
Finlets No. Dorsal   
Spines total
Soft-rays total 7 - 7
Adipose fin present

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total 12 - 13

Paired fins

Pectoral Attributes  
Soft-rays   10 - 11
Pelvics Attributes  
Position    abdominal  behind origin of D1
Soft-rays   6 - 6
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Torres, Armi G.
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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