Morphology Data of Amphilius dimonikensis
Identification keys
Abnormalities
Main Ref. Skelton, P.H., 2007
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 sub-terminal/inferior
Type of scales
Diagnosis

Diagnosis: eyes closely spaced (interorbital width 1.2-1.9 times orbit diameter); pigmentation brown with light bands, dark band across base of dorsal; origin of dorsal fin less than one head length behind head; dorsal base before origin of pelvic fins; dorsal leading ray extends full length of leading edge of fin; caudal fin with 6+7 principal rays; caudal peduncle length 1.18-1.47 times depth; snout half of head length; eyes placed equidistant from hind margin of head and tip of snout (mid-way along head) or nearer to tip of snout (Ref. 81646).

Description: body stout, depressed anteriorly, width tapering to a compressed caudal peduncle; head length 3.5-3.9 times in SL, depressed and rounded anteriorly; branchiostegal membrane deeply cleft mid-ventrally; mouth broad, subterminal, with lips thick and fleshy; jaw teeth caniniform in bands; 3 pairs of filamentous barbels, maxillary longest, subequal to head length; snout moderately long; nostrils in mid-snout, narrowly separated; eyes moderately sized, confluent with head (orbital margins attached); caudal peduncle short (5.9-7.1 times in SL), slightly longer than deep; fins well-developed; dorsal fin with 1 unbranched and 6 branched rays, its base entirely in advance of pectorals, rectangular with leading simple ray equal to length of leading edge; pectoral fins with 1 unbranched and 9 branched rays, not reaching pelvics, rounded with leading ray curved, padded and pectinate, innermost (posterior) rays align vertically against body wall; pelvics fins with 1 unbranched and 5 branched rays, broad, with padded pectinate leading ray, not reaching base of anal; anal fin with 2-3 unbranched and 4-5 branched rays, short, not reaching base of caudal; caudal fin with emarginate hind edge, ventral lobe slightly longer than dorsal lobe; adipose fin well-developed, rounded, base extends from before origin of anal to base of caudal procurrent ridge (Ref. 81646).

Coloration: head and body usually dark brown with 4-5 light saddle bands and a light off-white ventral surface from head to anal fin; fins with brown rays; caudal fin with broad dark brown basal band and a distal band (Ref. 81646).

Ease of Identification

Meristic characteristics of Amphilius dimonikensis

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

Fins

Dorsal fin(s)

Attributes
Fins number 1
Finlets No. Dorsal   0
Ventral  0
Spines total 0
Soft-rays total 7
Adipose fin present

Caudal fin

Attributes

Anal fin(s)

Fins number 1
Spines total 0
Soft-rays total

Paired fins

Pectoral Attributes  
Spines     0
Soft-rays   10
Pelvics Attributes  
Position    
Spines     0
Soft-rays   6
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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