--subdivision Classification under individual animals and groups of animals, e.g. Fishes--Classification
Zoology Computer Network Resources Juvenile Literature : Usborne Internet-linked Mysteries & marvels of nature / Elizabeth Dalby ; designed by Karen Tomlins ... [et al.] ; ill. by Candice Whatmore and Reuben Barrance ; digital imagery by Keith Furnival and Joanne Kirkby.
Zoology Dictionaries : Marshall Cavendish international wildlife encyclopedia / [general editors, Maurice Burton and Robert Burton].
--subdivisions Ecology; Larvae--Ecology; and Predators of--Ecology under individual animals and groups of animals, e.g. Cattle--Ecology; Fishes--Ecology; Fishes--Larvae--Ecology; Fishes--Predators of--Ecology