Mouthbrooder a genuine producer of captive-bred fish. Some fish have evolved to exploit the mouthbrooding behaviour of other species. "Synodontis multipunctatus", also known as the cuckoo catfish, combines mouthbrooding with the behavior of a brood parasite: it eats the host mouthbrooder's eggs, while spawning and simultaneously laying and fertilizing its own eggs. The mouthbrooder (typically a cichlid) incubates the cuckoo catfish young, the catfish eggs hatch earlier than the cichlid's eggs, and eat the as-yet unhatched cichlid eggs before being set free. Families of fish known to include mouthbrooding species include: Mouthbrooder Mouthbrooding, also known as oral incubation and buccal incubation,
Creature Catalogue found in the Basic, Expert, Companion and Master rulesets. Each creature in the book is illustrated, and the entries in the book are ordered by type rather than just alphabetically. This includes six sections: Animals (including giant and extinct varieties), Conjurations (such as elementals and golems), Humanoids, Lowlife (including insects, plants, and jellies and slimes), Monsters (a catch-all category), and Undead. The Intelligence score of each monster is listed with the rest of its statistics. The book also includes a comprehensive index of all monsters by environment, and Frank Mentzer's guide on how to balance encounters according to the levels