Hs-3, Hs-4 and Az-9 are salt tolerant strain, which show Gram negative to Gram-variable staining behavior under varying environmental conditions. These strains were grown in different media composition (lowry, nutrient, pennasy and M-9 minimal both in broth cultures and agar media) and salt stresses (MgSO4, KCL, KNO3) supplemtentated with 0.1 and 1 M of NaCl at 37°C for 4, 8, 16 and 24 hours. Media composition and various salts stress manifested great variation in straining behavior and cell morphology. Az-9 exhibited maximum variation in staining and morphology in rich medium. Hs-3 showed maximum filamentation under KCL stress in pennassy medium. KCL and KNO3 stresses caused filamentation, in all strains while spore formation was pronounced under MgSO4 and NaCl stress in Az-9 in nutrient agar. Pottassium salt caused adverse affects on cell morphology by degeneration or lysis of cells with passage of time.