Morphology Data of Sundadanio echinus
Identification keys
Main Ref. Conway, K.W., M. Kottelat and H.H. Tan, 2011
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

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

Distinguished from all congeners by its snout length, 15-19% HL and body depth at pelvic-fin origin, 25-30 % SL. Differs from all other species, except Sundadnio rubellus, by the presence of the secondary lateral stripe in both sexes. Can be further diagnosed by following combination of characters: large adult body size (largest specimen examined 17.8 mm SL); live males with emerald green sheen present across dorsal body surface, an intense red secondary lateral stripe, running along ventral edge of emerald green sheen from posterior to opercular opening to point opposite middle of anal fin, and an intense black marking across anterior portion of anal fin; preserved males with a well developed dark lateral stripe of roughly uniform depth along entire length, horizontal through ventral border of which, when brought forward, extending through dorsal half of eye; presence of a distinctive secondary lateral stripe of small melanophores running parallel to dark lateral stripe along its ventral margin from posterior to opercular opening to point opposite middle of anal fin; presence of reticulate pattern along dorsal body surface posterior to dorsal-fin origin; absence of dusky markings on dorsal and caudal fins; presence of enlarged scales next to window in body musculature; complete covering of scales on caudal peduncle; scales posterior to enlarged scales next to window in body musculature and anterior to anal-fin origin with a single small tubercle at center (Ref. 88800).

Description: Dorsal-fin rays ii.6.i; anal- fin rays iii.6; pectoral-fin rays i.6-7.i-ii; pelvic-fin rays i.5.i (Ref. 88800).

Ease of Identification

Meristic characteristics of Sundadanio echinus

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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
preanal 14 - 15
total 34 - 35


Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Spines total
Soft-rays total 9 - 9
Adipose fin absent

Caudal fin

Attributes forked

Anal fin(s)

Fins number
Spines total
Soft-rays total 9 - 9

Paired fins

Pectoral Attributes  more or less normal
Pelvics Attributes  more or less normal
Position    abdominal  before origin of D1
Soft-rays   7 - 7
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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