Filial cannibalism

Filial cannibalism occurs when an adult individual of a species consumes all or part of the young of its own species or immediate offspring. Filial cannibalism occurs in many animal species ranging from mammals to insects, and is especially prevalent in various species of fish.^[1] Exact evolutionary purpose of the practice in those species is unclear and there is no verifiable consensus among zoologists; it is agreed upon though that it may have, or may have had at some point in species' evolutionary history, certain evolutionary and ecological implications.