Keystone species mussel population explodes uncontrollably, driving out most other species. These creatures need not be apex predators. Sea stars are prey for sharks, rays, and sea anemones. Sea otters are prey for orca. The jaguar, whose numbers in Central and South America have been classified as near threatened, acts as a keystone predator by its widely varied diet, helping to balance the mammalian jungle ecosystem with its consumption of 87 different species of prey. The lion is another keystone species. Keystone mutualists are organisms that participate in mutually beneficial interaction and the loss of which would have a profound impact upon
Predator (fictional species) that their equivalent of the Grim Reaper is the so-called "Black Warrior," who is seen as an eternal adversary who eventually wins all battles. Though female Predators are occasionally referred to in Steve and Stephani Perry's novel series, one does not make an appearance until the comic book limited series "Aliens vs Predator: Deadliest of Species". The female's design contradicts the descriptions given in the Perry novel series, as it superficially shows little distinction from males. The Darkhorse/TopCow crossover "MindHunter", which pits the "Witchblade", "Darkness", "Aliens", and "Predator" franchises against each other, depicts a female Predator in a manner closer