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.
1981). Others have concluded that the goldfish is a subspecies of the crucian carp Carassius carassius (i.e., C. c. auratus). More recently, it has been reported that C. auratus is a tetraploid derivative of C. carassius (references in Jenkins and Burkhead 1994).