Table 2. Changes in the Shannon diversity index and Inverse Simpson diversity Index for bacteria in the intestinal contents of Nile tilapia from two farms and the continuous-flow competitive exclusion culture (CFCEC).

Sample		Shannon diversity index	Inverse Simpson diversity index
Farm	Atlantic	2.69	5.67
	Llanos	2.16	4.32
Days of the CFCEC	0	1.17	1.99
	1	1.47	2.56
	2	2.37	7.23
	3	2.36	6.66
	5	2.41	5.40
	17	2.46	6.88
	33	2.57	7.33