Morphology Summary - Malakichthys formosus
Morphology Data of Malakichthys formosus
Identification keys
Abnormalities
Main Ref. Ng, S.-L., K.-M. Liu and S.-J. Joung, 2023
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) elongated
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished from its congeners by the following set of characters: absence of paired spines on chin; proximal-middle radial of FAP curved, with cone-shaped hollow divided by lamellar septum; hollow shallow, its lower part of the hollow terminates at the midway between the upper part and the base of the first anal-spine; lateral wing well developed, extending from the upper part of hollow to the base of the anal-spine; anterior surface roundly convex; vane long, extending from the level of lateral wing to the base of anal-spine; membranous edge of opercle winth a prominent triangular tip; pectoral-fi tip not reaching the vertical level of anus; and lateral-line scales 53-56 (Ref. 138192)

Ease of Identification

Meristic characteristics of Malakichthys formosus

Lateral Lines Interrupted: No
Scales on lateral line 53 - 56
Pored lateral line scales
Scales in lateral series
Scale rows above lateral line 5 - 6
Scale rows below lateral line 11 - 12
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 2
Finlets No. Dorsal   
Ventral  
Spines total 10 - 10
Soft-rays total 9 - 10
Adipose fin absent

Caudal fin  (shape guide)

Attributes

Anal fin(s)

Fins number 1
Spines total 3 - 3
Soft-rays total 7 - 8

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   13 - 14
Pelvics Attributes  
Position    
Spines     1
Soft-rays   5 - 5
(e.g. 9948)
(e.g. oophagy)
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