Morphology Summary - Johnius majan
Morphology Data of Johnius majan
Identification keys
Abnormalities
Main Ref. Iwatsuki, Y., L.A. Jawad and J.M. Al-Mamry, 2012
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) short and / or deep
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 the following set of characters: upper pectoral fin base with a black axillary spot; D 29-32; A 8; scales above lateral line 6, below 11; eye diameter 22.9-28.9% HL; interorbital width 32.0-38.0% HL; gill rakers 5-6 + 15-18 = 21-24; no mental barbel, last well-developed pleural rib on 7th vertebra; 11 swim bladder appendages; vertebrae 10 + 14 = 24 (Ref. 90119).

Ease of Identification

Meristic characteristics of Johnius majan

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 6 - 6
Scale rows below lateral line 11 - 11
Scales around caudal peduncle
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 21 - 22
Vertebrae
preanal 10 - 10
total 24 - 24

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 2
Finlets No. Dorsal   
Ventral  
Spines total 10 - 10
Soft-rays total 29 - 31
Adipose fin absent

Caudal fin  (shape guide)

Attributes more or less truncate

Anal fin(s)

Fins number 1
Spines total 2 - 2
Soft-rays total 8 - 8

Paired fins

Pectoral Attributes  more or less normal
Spines     0
Soft-rays   17 - 18
Pelvics Attributes  more or less normal
Position    
Spines     
Soft-rays   
(e.g. 9948)
(e.g. oophagy)
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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