Previous experimental studies have established that shoaling fish forage more effectively in
large than small groups. We investigated how shoal size affects the foraging efficiency of …

The composition of an animal group can impact greatly on the survival and success of its
individual members. Much recent work has concentrated on behavioral variation within …

Two experimental studies are reported which investigate the social learning of foraging
information in guppies, Poecilia reticulataIn both cases, untrained adult female guppies …

Animals frequently exhibit consistent among‐individual differences in behavioural and
physiological traits that are inherently flexible. Why should individuals differ consistently in …

Animal groups are often nonrandom assemblages of individuals that tend to be assorted by
factors such as sex, body size, relatedness and familiarity. Laboratory studies using fish …

Differences in body mass are assumed to be a major factor leading to resource partitioning
and the reduction of competition between species within a guild. To study the effects of body …

In species living in social groups, aggression among individuals to gain access to limiting
resources can lead to the formation of stable social hierarchies. We tested whether …

Shoaling, the formation of social groupings in fish, can provide benefits including reduced
predation risk. However, it can also inflict costs including increased competition for …

Preferences for grouping with familiar individuals are shown in many animal species,
including the three-spined stickleback (Gasterosteus aculeatus). Shoaling with familiars is …