[Phylogenesis of reproductive strategies in labyrinth fishes (Anabantoidei) and their sisterly groups].

Clado- and semogenetic approaches, when used in concert, make it possible to resolve questions concerning phylogenetic relationships between a group representatives as well as phylogenesis of those representatives' traits. Parental care patterns and other forms of reproductive behavior, along with a reproductive strategy as a whole, can be subjects for semogenetic analysis to no lesser extent than morphological structures sensu stricto. One of the highly specialized forms of parental care in fishes, including suborder of labyrinth fishes and their sisterly groups, appears to be parental food provisioning.

Individual differences in parental care and behaviour profile in the convict cichlid: a correlation study.

We examined whether individual differences in patterns of parental care relate to individual differences in situations involving novelty, risk and aggression in the convict cichlid, Cichlasoma (Archocentrus) nigrofasciatum. Individual differences in situations of novelty and risk could be summarized along two axes: Freezing versus Activity and Activity-Inspection versus Freezing. However, these factors were not independent and formed a single higher-order dimension of general activity.

Consistency of individual differences in behaviour of the lion-headed cichlid, Steatocranus casuarius.

The development of individual differences in behaviour in a novel environment, in the presence of a strange fish and during aggressive interactions with a mirror-image was studied in the lion-headed cichlid (Steatocranus casuarius, Teleostei, Cichlidae). No consistency in behaviour was found at 4-5.5 months of age.