Table 3.

Impact of triazophos and deltamethrin on the behavioural pattern of Channa punctatus (average length 11 ± 2 cm and weight 23 ± 2 g, n = 10) exposed to the pesticides up to 96 h.

Parameters	Control	Triazophos (10-6 g/L)		Deltamethrin (10-6 g/L)
		3.4	6.8	0.36	0.72
Colour of skin	–	+	++	++	+++
Loss of balance	–	++	+++	+	++
Hyperactivity	–	++	+++	–	+
Rate of swimming	–	+	++	+	+
Surfacing activity	+	++	+++	–	+
Rate of opercular activity	+	+	++	+	+
Convulsions	–	+	++	–	–

The increase or decrease in the level of behavioural parameters is shown by numbers of (+) sign. The (−) sign indicate normal behavioural conditions.