Figure 1. Map of Vembanad Lake showing sampling sites

Table 1. Biological data of C. gariepinus individuals caught from Lake Vembanad.

Total Length (mm)	Body Weight (g)	Sex	Maturity	Coefficient of conditioning (K)
200	150	Male	Immature	0.5333
250	200	Male	Immature	0.7813
260	200	Male	Immature	0.8788
280	225	Male	Immature	0.9756
294	210	Male	Immature	1.2101
300	225	Male	Immature	1.2000
320	225	Male	Immature	1.4564
350	250	Male	Immature	1.7150
400	475	Female	Immature	1.3474
402	530	Female	Immature	1.2258
405	520	Male	Immature	1.2775
480	650	Male	Immature	1.7014
500	600	Female	Immature	2.0833
593	750	Female	Immature	2.7804
600	750	Male	Immature	2.8800
650	1400	Male	Mature	1.9617
700	1800	Male	Mature	1.9056
750	2500	Female	Mature	1.6875

Image 1. Sampling sites. (a) S1 - Punnamada Kayal; (b) S2 - A S Canal; (c) S3 - Pookaitha Kayal

Image 2. Clarias gariepinus (a) Farm raised and (b) wild caught

Image 3. Farms culturing Clarias gariepinus in the vicinity of Vembanad Lake