Morphology Data of Hypoptopoma brevirostratum
Identification keys
Abnormalities
Main Ref. Aquino, A.E. and S.A. Schaefer, 2010
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Male urogenital papilla is completely covered by flaplike anus, joined at base; with patch of tightly arranged small odontodes oriented as a swirl covering second, third, and fourth plates of ventral series, lateral to urogenital papilla; with soft-tissue flap along posterior margin of pelvic spine variably developed, when present it is short, restricted to basal onethird to one-half of spine. Female anus tubular, without separate urogenital papilla; size and arrangement of odontodes on plates lateral to anus similar to adjacent plates, without distinct patch of differentially arranged odontodes; pelvic spine without flap of soft tissue on posterior surface (Ref. 84367).

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral elongated
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species is distinguished from all congeners except H. muzuspi by having preopercle constricted medially (vs. no constriction); canal in preopercle present, semicircular, located posterior to the preopercle constriction (vs. canal absent from preopercle). It differs from H. muzuspi by its wider body, cleithral width 23.7-27.0 (25.7) (vs. 19.1-23.5 (22.2)), a deeper caudal peduncle, caudal-peduncle depth 6.4-9.1 (7.7) (vs. 5.2-6.7 (5.8)), and a larger eye, horizontal eye diameter 19.8-23.3 (21.7) (vs. 13.6-20.7 (18.4)) (Ref. 84367).

Ease of Identification

Meristic characteristics of Hypoptopoma brevirostratum

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 27 - 27

Fins

Dorsal fin(s)

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

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total

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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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17