Figure 3. Total time spent in the ‘preferred’ compartment pre- and post- exposure to three euthanasia agents.

Total time spent (s) in the light compartment, preferred by all fish before exposure to TMS (a; n = 17), clove oil (b; n = 16), and metomidate hydrochloride (c; n = 18). Times spent are also shown after exposure to these agents. The black bar represents the median. Each square dot shows the value of a single fish. Duplicate values are superimposed.