Morphology Summary - Dario tigris
Morphology Data of Dario tigris
Identification keys
Abnormalities
Main Ref. Britz, R., S.O. Kullander and L. Rüber, 2022
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks Males with dorsal-fin lappets only slightly extending beyond distal tip of fin spines; soft dorsal fin rounded, extending to caudal-fin base in females and beyond in males; soft anal fin rounded, barely reaching to caudal-fin base in females, slightly beyond caudal-fin base in males; pelvic fin sexually dimorphic: stopping short of anterior anal-fin base in females, but extending to first anal-fin spine in males (Ref. 137632).

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral  (shape guide) fusiform / normal
Cross section oval
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales
Diagnosis

This small species (barely exceeding 2.0 cm SL) is distinguished from all its congeners by the following characters: unique colour pattern, which consists of a series of eight straight bars, of which in males, the first two are ash-grey and the subsequent six are orange-red in life; a series of contrasted small black spots arranged in irregular rows dorsolaterally on the head and nape; further differs from the southern Indian species of Dario by having fewer vertebrae 24, rarely 25 (vs. 26-29 in urops, huli, neela); in addition to its colour pattern, it differs further from its close relative D. hysginon, recorded to occur syntopically, by having fewer dorsal-fin spines modally 14 (vs. 15) and fewer vertebrae modally 12+12=24 (vs. 12+13= 25); differs further from the only other barred Dario species in Myanmar, D. melanogrammus by having fewer vertebrae modally 24 (vs. 26) and dorsal-fin spines 12-13 (vs. 14-16) (Ref. 137632).

Ease of Identification

Meristic characteristics of Dario tigris

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 16 - 16
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total
Vertebrae
preanal 12 - 13
total 24 - 25

Fins

Dorsal fin(s)

Attributes
Fins number
Finlets No. Dorsal   
Ventral  
Spines total 13 - 15
Soft-rays total 5 - 8
Adipose fin

Caudal fin  (shape guide)

Attributes

Anal fin(s)

Fins number
Spines total 3 - 3
Soft-rays total 7 - 8

Paired fins

Pectoral Attributes  
Spines     
Soft-rays   13 - 13
Pelvics Attributes  
Position    
Spines     
Soft-rays   
(e.g. 9948)
(e.g. oophagy)
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