▪ Abstract Fish species have diverse breeding behaviors that make them valuable for testing
theories on genetic mating systems and reproductive tactics. Here we review genetic …

Fish have been shown to discriminate between individuals on very general bases such as
species, body length and colour. More recently, evidence has been accumulating from a …

Social organisation in animals takes many forms. It includes assemblages of territorial
animals, dominance hierarchies and social groups, among other things. The basic tenet that …

The author shares some lessons learned from a lifetime of working with and thinking about
groups. Three types of groups are described, including the impact they have on the …

Differentiating kin from nonkin enables organisms of many species to allocate resources or
altruistic behaviour towards related conspecifics and to avoid mating with close relatives. Kin …

By contrast with a multitude of laboratory studies on the social organization of fish, relatively
little is known about the size, composition and dynamics of free-ranging fish shoals. We give …

Overexploitation and subsequent collapse of major worldwide fisheries has made it clear
that marine stocks are not inexhaustible. Unfortunately, the perception remains that marine …

Levels of inbreeding are highly variable in natural populations [1, 2]. Inbreeding can be due
to random factors (like population size), limited dispersal, or active mate choice for relatives …

Empirical studies of natural populations have commonly reported departures from Hardy-
Weinberg expected proportions of heterozygote individuals. Recent advances in statistical …

The study of partner‐choice decisions of individual fish is a good way in which insights into
patterns of school structure or territorial assemblages can be gained. Most initial work has …