How do I get this fireball script to work?

I am trying to get shark to breathe fire and my script has the same error each time. It says: Workspace.Shark.ToothlessMainScript:10: '=' expected near 'breathefire' What does this mean ?

Here is my script

therewasnonameleft --CHECK WHOLE SCRIPT

local sp = script.Parent

local head =sp:WaitForChild("Head") local fireballscript = sp:WaitForChild("FireballScript") -- function that spawns part in dragons head funtion breathefire() local fireball = instance.new("Part") fireball.Transparency = 1 fireball.Name = "Effect" -- naming it fireball.BrickColor = BrickColor.new("Bright Orange") --makes it orange fireball.size=Vector3.new(2,2,2)-- big/small, size fireball.CanCollide = false -- doesnt bounce of thingies fireball.cFrame = head.Cframe fireball.Velocity=head.CFrame.lookVector*math.random(30, 70) --speed fireball.TopSurface = "Smooth" fireball.BottomSurface = "Smooth" local fire= Instance.new("Fire") fire.Parent =fireball fireball.Parent=game.Workspace -- makes it exist

local firescript=fireballscript:clone() firescript.Parent=fireball firescript.Disabled = false

 fireball.Parent=game.Workspace -- makes it exist

end

while true do wait(2) breathefire() breathefire() breathefire() breathefire() end