Python / PyCharm缺少参数’self’？

Traceback (most recent call last):
File "C:/Users/Sam/PycharmProjects/untitled1/app.py",line 5,in <module>
    fish1.bubbles()
TypeError: bubbles() missing 1 required positional argument: 'self'

这是我的代码：

import random
from Fish import Fish

fish1 = Fish
fish1.bubbles()

fish1.name = input("enter the name of your fish: ")
fish1.coords = ("({0},{1})".format(random.randint(1,100),random.randint(1,100)))

print("The fish's name is {0},and it is swimming at co-ordinates{1}".format(fish1.name,fish1.coords))

这是我的Fish.py文件：

class Fish:

    def __init__(self,name,coords):
        self.name = name
        self.coords = coords

    def bubbles(self):
        print("{0} blew some bubbles".format(self))

任何帮助,将不胜感激！