Goldfish “cuddling” is often a sign of breeding behavior, where one fish closely follows or nudges another as part of mating ...

While a dominant male fish from northern Mexico mates with a female, a small fella bides his time in the offing. Suddenly, the little guy darts in ahead of Mr. Big and plants his seeds on freshly laid ...

Cover -- Half-Title Page -- Title Page -- Copyright Page -- Contents -- Preface -- Introduction -- Acknowledgments -- 1. Reproductive Behavior: Spawners -- 1.1. The ...