The document summarizes different aspects of fish reproduction, including types (asexual and sexual), sexual maturity timelines that vary by species, diversity in sexes (dioecious and hermaphroditic), modes of sexual reproduction (oviparity, ovoviviparity, viviparity), clutch sizes, courtship synchronism, sexual dimorphism, and various strategies for protecting eggs and young. Sexual reproduction is the most common, involving internal or external fertilization of eggs, while a few fish species can reproduce asexually or are hermaphroditic.

1. Fish Reproduction