Morphology Data of Malthopsis apis
Identification keys
Abnormalities
Main Ref. Ho, H.-C. and P. Last, 2021
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 flattened
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: rostrum short (length 6.5%-10.0% SL), pointed and needle-like, with a small base and curved slightly and directed anterodorsally; body covered with small, pointed spiny bucklers; posterior portion of

skull with 3 irregular rows of small bucklers (those in lateral rows are much larger than those in median row); broad naked areas on shoulder and gill cavity; ventral surface of disk is densely covered by small pointed bucklers, slightly larger and denser on breast than belly; the subopercular buckler with well-developed spines, with anteriormost directed forward, lateral spine directed outward, and 1-2 posteriormost spines directed backward; orbit is large, its diameter 13.8%-15.5% SL; both post-subopercular bucklers with one or more sharp spines; interorbital space narrow (3.7%-5.5% SL); OD/RL = 1.4-2.4; OD/IO = 2.7-4.2; anal fin reaching or beyond the caudal-fin base when appressed; D 5-6; pectoral-fin rays 11-13 (Ref. 123774).

Ease of Identification

Meristic characteristics of Malthopsis apis

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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 5 - 6
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   11 - 13
Pelvics Attributes  
Position    
Spines     
Soft-rays   
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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