Table 2 Effects of clove oil dose and MS-222 on anesthesia in large-sized and small-sized Far Eastern catfish, Silurus asotus^*

Dose (mgL⁻¹)	Exposure time (sec)
	Clove oil		MS-222
	Large size	Small size	Large size	Small size
200	173±26.9^a	85±19.9^a	235±18.4^a	119±21.5^a
300	103±6.7^b	57±3.4^b	170±23.2^b	77±13.3^b
400	70±11.3^c	42±6.5^c	100±15.9^c	56±4.5^c
500	62±8.7^d	40±2.7^d	82±8.7^d	50±6.1^c
600	47±6.2^e	32±2.0^e	61±9.2^e	40±4.2^d

Each value is the mean±SD of a triplicate experiment (total n=60). Values in the same column not sharing common superscripts are significantly different (p<0.05). Large-sized specimens were sourced from 1-year-old hatchlings with an average body mass of 302.1±15.22 g and a standard length of 31.5±4.19 cm. Small-sized specimens were sourced from 2-month-old hatchlings with an average body mass of 50.1±5.91 g and a standard length of 15.5±1.58 cm.