title: Triplophysa arnoldii
text: # Triplophysa arnoldii
  
  Triplophysa arnoldii is a species of stone loach in the genus Triplophysa. It is endemic to Mongolia. It grows to 7 cm (2.8 in) SL.
  
  ## Etymology
  
  The fish is named in honor of Lev Vladimirovich Arnoldi (1903-1980), a Russian entomologist, who collected the type specimen.
  
  