Morphology Data of Malacoctenus delalandii
Identification keys
Abnormalities
Main Ref. Carvalho-Filho, A., I. Sazima, S.M.Q. Lima, D. Almeida, L. Mendes, R.M. Dias, M.R. Britto and J.L. Gasparini, 2020
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
Cross section oval
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished from its southwestern Atlantic congeners by the following set of characters: D XX,9-11 (rarely XIX or XXI); A II,17-21; pectoral-fin rays14-15 (rarely 13); length of third pelvic-fin ray contained 2.5 to 3.0 times in second pelvic-fin ray; lateral-line scales 48-56; total nuchal cirri 24-36; pectoral-fin base and midline before dorsal-fin no scales; breast usually fully scaled in males, often naked in females; pores 2-3 from preopercular canal onto opercle. Colouration: pattern dominated by 5-6 (rarely 7), saddle-like bars on body, extending to spiny dorsal fin (Ref. 123106).

Ease of Identification

Meristic characteristics of Malacoctenus delalandii

Lateral Lines Interrupted: No
Scales on lateral line 48 - 56
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 1
Finlets No. Dorsal   
Ventral  
Spines total 20 - 20
Soft-rays total 9 - 11
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 2 - 2
Soft-rays total 7 - 21

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   14 - 15
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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