Morphology Data of Aseraggodes xenicus
Identification keys
Main Ref. Randall, J.E. and P. Bartsch, 2005
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral short and / or deep
Cross section compressed
Dorsal head profile clearly convex
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth sub-terminal/inferior
Diagnosis

Diagnosis: Dorsal rays 64-67; anal rays 42-44; dorsal and anal rays are not branched. Caudal rays 18, the middle 14 branched. Lateral-line scales of ocular side 64-67; the line extending forward nearly to upper eye, with a ventral branch on head following the edge of the preopercle. Vertebrae 10 + 23-24. Dorsal pterygiophores anterior to fourth neural spine 14-15. Body depth 2.4-2.5 in SL; head length 3.55-3.65 in SL; snout long, 2.6-2.95 in head length; interorbital space narrow, 13.7-20.8 in head length. Caudal peduncle very short, 19.5-23.2 in HL. Tubular anterior nostril anterior to upper edge of lower eye, just reaching cutaneous edge of lower orbit when depressed posteriorly. Two rows of scales in interorbital space, none extending onto medial edges of eyes. Anterior edge of snout of largest specimen (23 mm SL) with a series of 12 conspicuous lappet-like cirri. Ventral margin of head with 20 similar cirri, the longest on chin about equal to pupil diameter; no cirri on opercular edge of either side of gill opening. Jaws of blind side surrounded by a zone of small papillae. Dorsal and anal rays long, the longest dorsal ray 2.5-3.0 in HL. No sheath of scales over base of dorsal and anal fins, at most one row of scales over basal part of rays. Rounded caudal fin and moderately long, 3.2-3.45 in SL. Pelvic fins long, reaching base of third or fourth anal ray, 1.65-1.9 in HL. Color of ocular side when fresh light gray with large irregular dark-edged white spots on head and body, scattered small whitish spots, fewer small black spots, a black spot the size of eye on lateral line in middle of body and a double black spot on lateral line in middle of posterior half of body (Ref. 56490).

Ease of Identification

Meristic characteristics of Aseraggodes xenicus

Lateral Lines Interrupted: No
Scales on lateral line 64 - 65
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 33 - 34

Fins

Dorsal fin(s)

Attributes first fin ray very elongated
Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 0 - 0
Soft-rays total 64 - 67
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 42 - 44

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   0 - 0
Pelvics Attributes  more or less normal
Position    thoracic  behind origin of D1
Spines     0
Soft-rays   4 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Reyes, Rodolfo B.
Modified by Capuli, Estelita Emily
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