Results: 3

Unusual effect of chemical communication on social aggression in juvenile cichlid fish Cichlasoma paranaense (Cichliformes: Cichlidae)

Neotrop. ichthyol; 17 (2), 2019
Some fish species are socially organized and show a social rank order which is achieved through aggressive interactions. After hierarchy is settled, such species communicate their ranks through several sensorial cues; this communication is adaptive because it reduces detrimental effects from physical con...

Temperature affects the hypoxia tolerance of neotropical Cichlid Geophagus brasiliensis

Neotrop. ichthyol; 16 (1), 2018
Oxygen and temperature are the most limiting factors in aquatic environments. Several species are exposed to variations of these factors in water because of physical, chemical and biological processes. The objective of this study was to evaluate the metabolic profile and the tolerance to the hypoxia of G...

Water temperature affects aggressive interactions in a Neotropical cichlid fish

Neotrop. ichthyol; 16 (1), 2018
Changes in water temperature may affect the aggressive behavior of aquatic organisms, such as fish, either by changing some physiological mechanisms or by increasing the probability of encounters between individuals as a result of variation in their swimming activity. In our study, we evaluated the influ...