video: judgement bias test in Convict cichlid

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Convict cichlid are trained to open boxes covered by a movable lid. The set-up is used in judgement bias test in order to assess mood (emotional state estimated from optimism-pessimism bias) of the fish when separated from their sexual partners.

> Laubu C, Louâpre P, Dechaume-Moncharmont F-X (2019) Pair-bonding influences affective state in a monogamous fish species. Proceedings of the Royal Society B: Biological Sciences 286:20190760 [pdf] + [media coverage]