Descripción: “...Anatomically, this species has  no tongue,  oesophagus is short and muscular, stomach  is relatively large and muscular. The intestine has an intermediate  length, with scarce muscle. ...”

Descripción: “...At necropsy examination, fish inoculated with bacteria showed: hem- orrhages on the base of fins and internal organs, pale and mottled liver, increased abdominal fluid and blood-stained fluid in intestine, unlike control animals that did not show these lesions. ...”

Descripción: “...Macro and microscopically, the most affected internal  organ  was the  spleen, being able to establish the biggest degrees of severity and extension of the granulomatous lesion (3 in a scale of 0 at 3). ...”