I came home tonight to find my 15" pike cichlid lying on the substrate on its side gasping, its belly is swollen and its curved at an odd angle, i dont know what to do im doing a water change as we speak but dont know what couldve happened theres no fish for it to have eaten to cause the swelling and my two oscars appear to be okay please help any advice or suggestions are greatly appreciated this day has turned out to be really terrible and im worried my pike isnt going to make it i have no idea what caused this any guesses are appreciated thank you