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.
The butterfly-tail goldfish is called the jikin in Japan, and it is believed to have been bred from the wakin goldfish. Another name for this goldfish variety is the star -tail goldfish. The physical appearance of the butterfly-tail differs from the wakin in that the tail, which, when opened, forms a large x that resembles the shape of a butterfly when viewed from behind. The buttefly-tail is a relatively hardy goldfish, but they are harder to find in pet stores than other goldfish varieties.