Eckert-Hetzel et al.
Eckert-Hetzel, B., Römer, U., Beisenherz, W.
Influence of temperature on the behaviour of Apistogramma cacatuoides Hoedemann, 1951 (Teleostei, Perciformes, Cichlidae)
Summary: Apistogramma cacatuoides maintained at 23, 26 and 29 °C show significant differences in behaviour. Individuals kept at 26 °C are significantly more active compared to those reared at higher or lower temperatures. Higher levels of activity are correlated to higher levels of food uptake. Effects of temperature are also present in agonistic behaviour. Males kept at 26 °C show the lowest level of aggression. We suggest, that there is a temperature-optimum at 26 °C.