Descripción: “...The isolations were positive to  the  Mycobacterium group;  colonies of three  of the samples  were isolated  between Lowestein Jensen medium, two of them for cultivation to 28° C, colonies with yellow pigment  of growth  between two and three months and another with growth to 28° C with pigment to the month of incubation, typification studies characterized the cultivations like with Mycobacterium  fortuitum.The incidence of the  mycobacterium infection in facilities of reproducers  of scalar  is relatively high -46% of the observed animals developed clinical signs  possibly associated to stressant factors like the accumulation, bad nutrition, fluctuations of temperature, water quality  and inadequate  manipulation.  ...”