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.
Goldfish (Carassius auratus) are much-loved aquatic pets that are seen all around the planet in aquarium environments. These family Cyprinidae freshwater fish are originally from the eastern portion of Asia, and have enjoyed popularity in the western world as pets from the 1700s onward. Many goldfish also still live in their natural environments, too.