South America: RÃo Rosario drainage in the RÃo de La Plata region of Uruguay, and from the lower RÃo Uruguay tributaries in Argentina, Uruguay and Brazil
Definition: length of a fish measured from the tip of the snout to the posterior end of the last vertebra or to the posterior end of the midlateral portion of the hypural plate. Simply put, this measurement excludes the length of the caudal fin