Most mutually beneficial social interactions (cooperation within species, mutualism between
species) involve some degree of partner choice. In an analogy to economic theory as …

Transitive inference (TI) is the ability to infer unknown relationships from previous
information. To test TI in non-human animals, transitive responding has been examined in a …

But fish cognitive ecology did not begin in rivers and streams. Rather, one of the starting
points for work on fish cognitive ecology was work done on the use of visual cues by homing …

Animal cognition is deeply influenced by interactions with the environment. A notable
example of sophisticated cognition in the animal kingdom is described by the mutualistic …

Cleaner fishes remove parasites from other fishes called “clients,” thereby contributing to a
healthier ecosystem. Although the behavior and learning abilities of dedicated and tropical …

Highlights•We investigated the mechanisms of social organization variation in E.
prochilos.•We used a controlled group manipulation to test the behavioural flexibility of …

Introduction Comparative studies of brain anatomy between closely related species have
been very useful in demonstrating selective changes in brain structure. Within-species …

Highlights•Facultative cleaning gobies can live in different social and ecological
conditions.•We investigated how these differences influenced cleaning …

As evidence for advanced cognitive abilities in fishes steadily increases, cytoarchitectonic
studies of the Actinopterygian telencephalon receive increasing interest by neuro …