The goldfish comes under the class "Actinopterygii" order "Cypriniformes" family "Cypriniae" genus "Carassius". Its binominal (Taxonomic) name is "Carassius auratus" (auratus meaning golden or of gold)
Yes
they often fall or have a disturbing chase
Predatory fish and birds will kill heaps in the wild but most goldfish are killed by people who don't look after them properly.
Specific instance of a class is called object of that class.
go to the vet ASAP
They've not got muscles to keep them up straight. Its only the water which is holding them up and making them move.
The actions in a java class are called methods.
Class B is said to be a "subclass" of class A.
it is just called a class
yes
A logical abstract base class for a class called CricketPlayer could be Batsman class or Bowlerclass.
Spanish upper class is called Principalìa.