Morphology Data of Acanthanectes hystrix
Identification keys
Main Ref. Holleman, W. and C.D. Buxton, 1993
Appearance refers to Male; Female
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Male and females differ in head and dorsal fin pigmentation, and caudal fin bars absent in females (Ref. 35802).

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales ctenoid scales

Description: Small fusiform tripterygiid, less than 3.5 cm SL. Dorsal fin IV + XIII + 10, first fin lowest, third fin highest, spines and rays with lateral branches; anal fin I + 18-19; pectoral rays 16, also branched; pelvic fin I, 2, spine short and hidden, rays slender, partially united by membrane; caudal rays 6+7, divided once (except the upper-and lowermost), procurrent 6+5. Vertebrae 11 + 23-24; pleural ribs 9, epipleural ribs 11. LL total lateral scales 34; pored series 15-18 (16) scales; posterior notched series scales 19-22 (22), two scale rows after the end of the pored series; transverse scales 3/7; head and body covered with scales including belly and bases of fins; scales ctenoid with stout ctennii, small and modified on cheeks and opercle. Head broad, blunt, and with spiny papillae on snout and perimeter of eyes. Mandibular pores 3+2+3. Infraorbital canal single, unbranched. Head orange, paler and banded in females. Body pale grey with 5 distinct deep orange bars, darkest on caudal peduncle (Ref. 35802).

Ease of Identification easy to distinguish from other species.

Meristic characteristics of Acanthanectes hystrix

Lateral Lines Interrupted: No
Scales on lateral line 34 - 34
Pored lateral line scales 15 - 18
Scales in lateral series
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Attributes no striking attributes
Fins number 3
Finlets No. Dorsal   
Spines total 16 - 18
Soft-rays total 9 - 10
Adipose fin absent

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number 1
Spines total 1 - 1
Soft-rays total 18 - 19

Paired fins

Pectoral Attributes  more or less normal
Soft-rays   15 - 16
Pelvics Attributes  more or less normal
Position    thoracic  beneath origin of D1
Spines     1
Soft-rays   2 - 2
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Olisa, Kristine Elaine Paz
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