Classification / Names
Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa
Actinopterygii (ray-finned fishes) > Cypriniformes
(Carps) > Cyprinidae
(Minnows or carps) > Danioninae
Etymology: Sundadanio: Composed from Sunda , Asiatic island + Vernacular name fron India and Sri Lanka; atomus: From the Latin 'atomus', an indivisible particle, in reference to the small size of this species. A noun in apposition.. More on author: Kottelat.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; benthopelagic. Tropical
Asia: peat swamp forests of Pulau Singkep, Sumatra, Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 1.6 cm SL male/unsexed; (Ref. 88800)
Morphology | Morphometrics
soft rays: 9 - 10;
Vertebrae: 34 - 35. Distinguished from all its congeners, except Sundadanio axelrodiand Sundadanio goblinus, by having weakly developed dark lateral stripe. Differs from Sundadanio axelrodi by its caudal peduncle with a complete covering of overlapping scales (vs. caudal peduncle devoid of scales or with few small, widely spaced scales situated along horizontal septum) and from Sundadanio goblinus by the absence (vs. presence)
of intense dusky markings on the dorsal and caudal fins. Can be further diagnosed by the following combination of characters: small adult body size (largest specimen examined 15.7 mm SL); blue to emerald green sheen (this depends on angle of incident light and perception) across dorsal body surface and an intense red colour across anterior portion of anal fin in live males; absence of secondary lateral stripe in males; absence of reticulate pattern along dorsal body surface; scales posterior to window in body musculature and anterior to anal-fin origin with a single small tubercle at center (Ref. 88800).
Inhabits peat swamp forests (Ref. 88800).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Conway, K.W., M. Kottelat and H.H. Tan, 2011. Review of the Southeast Asian miniature cyprinid genus Sundadanio (Ostariophysi: Cyprinidae) with descriptions of seven new species from Indonesia and Malaysia. Ichthyol. Explor. Freshwat. 22(3):251-288. (Ref. 88800)
IUCN Red List Status (Ref. 119314)
CITES (Ref. 115941)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5039 [Uniqueness, from 0.5 = low to 2.0 = high].
Resilience (Ref. 69278
): High, minimum population doubling time less than 15 months ().
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .