Morphology Data of Callionymus omanensis
Identification keys
Abnormalities
Main Ref. Fricke, R., L.A. Jawad and J.M. Al-Mamry, 2014
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 elongated
Cross section other (see remarks)
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This species within the subgenus Bathycallionymus is distinguished from its congeners under this by the following characters: small branchial opening; short head short (3.9 in LS); large eye (2.4 in head length); preopercular spine with a long, upcurved main tip, a small antrorse barb and a larger antrorse spine, and a strong antrorse spine at its base, smooth ventral margin; first dorsal fin is slightly higher than the second (in male); second dorsal fin distally straight; pectoral fin rays 17; caudal fin slightly pointed distally, with 2 median unbranched rays with short filaments; first dorsal fin with basal black spot reaching from first to fourth membranes, the third membrane with an ocellated distal black blotch; second dorsal fin with dark grey vertical bars; distal three-fourths of anal fin is black; upper half of caudal fin with dark grey oblique bars; pelvic fin dark grey, second ray basally with a black blotch. This species differs from the similar C. profundus (characters in parentheses) in a more slender preopercular spine with the distance of the two dorsal points more than the length of the longest point (vs. stouter, distance less than the longest point); pectoral fin rays 17 (vs. 18-20); the dark pelvic fin with a black blotch basally on second ray (vs. pale, with a few dark spots); first dorsal fin with a basal black blotch reaching from first to fourth membranes, and a distal ocellate black blotch on third membrane (vs. basal black blotch only reaching from second to third membranes, and third membrane distally dark but not ocellate); distal three-fourths of anal fin dark grey (vs. only distal one-fourth of the anal fin dark); thorax of male plain white (vs. dark grey); snout dorsally with an oblique dark band (vs. without a band, but with a few dark spots); dorsal part of the pectoral fin base pale but with a dark streak behind the pectoral fin (vs. dorsal part black, no dark streak behind pectoral fin); dorsal half of the caudal fin with 4 oblique dark streaks (vs. pale, with a few dark spots). This species differs from Callionymus bentuviai in having just a single dorsal point on the preopercular spine (vs. additional to the small antrorse barb and the main tip; 2 points in C. bentuviai); pectoral fin rays 17 (vs. 19-22); median filaments of the caudal fin short (vs. very long); anal fin with the distal three-fourths dark grey (vs. distal one-fourth dark); dorsal half of the caudal fin with 4 oblique dark streaks (vs. 1 horizontal dark streak); second membrane of the first dorsal fin of the male not deeply incised (vs. deeply incised). This species is distinguished from Callionymus africanus in having just a single dorsal point on the preopercular spine (vs. additional to the small antrorse barb and the main tip; 2 points); first dorsal fin with the basal dark blotch reaching from first to fourth membranes, and a distal black ocellus on third membrane (vs. basal black blotch reaching from second to third membranes, no distal ocellus on third membrane); colouration of the second dorsal fin, with vertical dark grey bars (vs. 2 horizontal rows of dark spots and 3 rows of white spots); anal fin with the distal three-fourths dark grey (vs. distal one-fourth dark); dorsal half of the caudal fin with 4 oblique dark streaks (vs. pale, with a scattered dark spots); depressed body (Ref. 96973).

Ease of Identification

Meristic characteristics of Callionymus omanensis

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
Finlets No. Dorsal   
Ventral  
Spines total 4 - 4
Soft-rays total 8 - 8
Adipose fin

Caudal fin

Attributes

Anal fin(s)

Fins number
Spines total
Soft-rays total 8 - 8

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   17 - 17
Pelvics Attributes  
Position    
Spines     1
Soft-rays   5 - 5
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Capuli, Estelita Emily
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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