Neoralfsia expansa is a species of brown algae in the family Neoralfsiaceae. They are native to SãO Paulo, Rio Grande Do Sul, Rio De Janeiro, Paraná, Ceará, Santa Catarina, Espirito Santo, and Bahia.
Definition: A group of species that exploit the same food resources, and/or use the same feeding or foraging methods. http://en.wikipedia.org/wiki/Guild_(ecology)