Morphology Data of Symphurus microrhynchus
Identification keys
Abnormalities
Main Ref. Lee, M.-Y. and T.A. Munroe, 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 from all congeners by the combination of: ID pattern1-2-2-2-2; caudal-fin rays 12; vertebrae; 9 (3 + 6) abdominal, 48 total; hypurals 4; D 87, A 73; longitudinal scale rows 64; transverse scale rows 25; scale rows on the head posterior to the lower orbit 15; body elongate (BD = 24.9% of SL); preanal length long (PAL = 28.1% of SL); upper head lobe much smaller than lower lobe; head long (HL = 24.2% of SL), longer than head width (HW/HL = 0.97); postorbital length long (POL = 76.5% of HL); snout short (SNL = 10.4% of HL, SNL/ED = 1.25), slightly rounded anteriorly; dorsal-fin origin located at the vertical posterior to upper eye; predorsal length short (PDL = 18.1% of HL); eye is relatively small (ED = 8.4% of HL); eyes are unequal in position with anterior margin of upper eye greatly in advance of anterior margin of lower eye; fleshy ridge well developed on posterior part of ocular-side lower jaw; membrane covering upper and lower eyes; with continuous, fleshy membrane connecting anterior nostril with lower part of eye. Colouration: ocular-side pigmentation uniformly yellowish-brown; blind-side pigmentation uniformly yellow; both sides with obvious dermal spots on bases of anteriormost dorsal and anal fins (Ref. 126065).

Ease of Identification

Meristic characteristics of Symphurus microrhynchus

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 9 - 9
total 48 - 48

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total
Soft-rays total 87 - 87
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total 73 - 73

Paired fins

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