Morphology Data of Rhamphichthys drepanium
Identification keys
Abnormalities
Main Ref. Triques, M.L., 1999
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 elongated
Cross section compressed
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth sub-terminal/inferior
Type of scales cycloid scales
Diagnosis

Swim-bladder in adults reduced to a small narrow tube-like body generally thick-walled; oblique transversal dark bars interrupted dorsally, not crossing or reaching the sagittal line, the upper extremities of these bars being widened resembling the form of a small sickle. Anal fin rays 308-417; no caudal fin (Ref. 30543).

Ease of Identification

Meristic characteristics of Rhamphichthys drepanium

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 0 - 0
Soft-rays total 0 - 0
Adipose fin

Caudal fin

Attributes other (see remark)

Anal fin(s)

Fins number
Spines total
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   18 - 20
Pelvics Attributes  suppressed/absent
Position    
Spines     0
Soft-rays   0 - 0
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