Morphology Data of Ageneiosus akamai
Identification keys
Abnormalities
Main Ref. Ribeiro, F.R.V., L.H. Rapp Py-Daniel and S.J. Walsh, 2017
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
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species can be distinguished by the following set of characters: D I,6; A 31-37; P I,11-13 (mode 12); GR 14-18 (mode 16) on anterolateral margin of first branchial arch; 46-48 total vertebrate; caudal fin deeply forked, with pointed lobes; reduced and ossified gas bladder; and by having epaxial musculature covering the tympanic region. Colouration: dark uniform dorsolateral stripe extending from posterior region of head to caudal-fin base; dark blotch of snout expanded posteriorly on top of head above frontals and nuchal plates; dorsal area of snout almost completely dark; pectoral and pelvic fins hyaline or dark, with many melanophores; anal and caudal fins hyaline and yellowish; dorsal fin often has melanophores concentrated on distal tips of first branched rays (Ref. 124585).

Ease of Identification

Meristic characteristics of Ageneiosus akamai

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 14 - 18
Vertebrae
preanal
total 46 - 48

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 31 - 37

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   11 - 13
Pelvics Attributes  
Position    
Spines     
Soft-rays   
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