Table 3. Feed conversion ratio (FCR), feed efficiency (FE), and survival rate (SR) of giant trevally ( Caranx ignobilis) juveniles.

Treatment		FCR	FE (%)	SR (%)
A.	Without supplementation of rice husk activated charcoal (0%)	1.638 ± 0.138 c	61.381 ± 4.940 b	80.00 ± 5.443 bcd
B.	Supplementation of 1% rice husk activated charcoal	1.581 ± 0.174 bc	63.807 ± 6.932 bc	70.00 ±8.607 ab
C.	Supplementation of 1.5% rice husk activated charcoal	1.419 ± 0.099 ab	70.734 ± 4.771 c	83.33 ±6.667 cd
D.	Supplementation of 2% rice husk activated charcoal	1.257 ± 0.134 a	80.264 ± 9.130 d	88.33 ±3.333 d
E.	Supplementation of 2.5% rice husk activated charcoal	1.922 ± 0.089 d	52.114 ± 2.460 a	65.00 ±6.383 a
F.	Supplementation of 3% rice husk activated charcoal	1.757 ± 0.141 cd	57.198 ± 4.544 ab	75.00 ±10.000 abc

Note: Numbers followed by different letter superscripts are significantly different (P < 0.05).