Abstract
Repeatedly elicited the threat display of 6 male Siamese fighting fish, Betta splendens, during daily sessions over a 10-day period, using a mirror, a live Betta, and a picture of a Betta as stimuli. Between-day analysis of the rate of elicitation of component responses of the display shows that (a) for those records in which any decline in response frequency was evident, only the gill-cover extension and undulation responses showed marked and consistent habituation trends; (b) gill-cover extension and undulation response rates covaried closely but were not consistently related to other response component rates; and (c) differential effectiveness of the 3 stimuli was reflected in the rates of several response components.
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