The three types of symbiosis are... Mutualism: A relationship in which both species benefit. Commensalism: A relationship in which one species benefits and the other speci â¦ es is neither helped nor harmed.
Definition of goldfish. : a small usually golden-orange Asian cyprinid fish (Carassius auratus) often kept as an aquarium and pond fish.
Fancy goldfish (the ones with a rounder body and double tail) live for around 5-10 years depending on breeding and water quality. Common goldfish (with the more streamlined body and single tail) can live for around 20 years.