Morphology Data of Channallabes longicaudatus
Identification keys
Main Ref. Devaere, S., D. Adriaens and W. Verraes, 2007
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 elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

Diagnosis: large, well pronounced supraorbital process present on infraorbital IV, reaching rostral border of eye; fenestra between scapulo-coracoid and cleithrum present; no contact between entopterygoid and quadrate; pale spot present on skull roof between anterior and posterior fontanel; low number of dorsal (98-116) and anal (75-105) fin rays (Ref. 81644). Clear serrations on both sides of pectoral spine (Ref. 58516, 81644).

Description: body elongated, abdominal depth 4.0-9.8% SL (mean 6.3); long dorsal and anal fins, continuous with caudal fin; dorsal fin rays 98-116 (mode 105), anal fin rays 75-105 (mode 98); distance between supraoccipital process and dorsal fin 9.1-17.6% SL (mean 11.6); pectoral fins present, length between 41.8-73.5% skull length; pelvic fins present, length between 4.2-14.4% skull length; skull short, 5.8-13.8% SL (mean 8.5); skull width 64.4-79.6% skull length; skull roof (exposed bony part in between bulging jaw muscles) very narrow, 13.3-42.0% (mean 24.2) skull length; jaw muscles hypertrophied and bulging; eyes bordered by small infraorbital bones, of which postorbital one shows plate-like outgrowth and bears a supraorbital process reaching rostral border of eye; eyes small, without free orbital rim; lower lip clearly shorter than upper lip (Ref. 81644).

Coloration: in live: brown dorsal side, gradually fading to a lighter brown colour, undefined paler line in the middle (Ref. 81644). Alcohol preserved specimens: light brown colour, gradually fading to a paler ventral side; a well-defined pale spot on skull roof (Ref. 81644).

Ease of Identification

Meristic characteristics of Channallabes longicaudatus

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 84 - 91


Dorsal fin(s)

Attributes extending over most of the back length
Fins number 1
Finlets No. Dorsal   0
Ventral  0
Spines total 0
Soft-rays total 98 - 116
Adipose fin absent

Caudal fin

Attributes confluent

Anal fin(s)

Fins number 1
Spines total 0
Soft-rays total 75 - 105

Paired fins

Pectoral Attributes  
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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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