title: Sundadanio atomus
text: # Sundadanio atomus
  
  Sundadanio atomus is a danionin in the family Cyprinidae. It is endemic to Singkep, off Sumatra (Indonesia). It lives in peat swamp forests.
  
  Sundadanio atomus reaches a maximum size of 1.6 cm (0.63 in) standard length.
  
  