Hello everyone !!! Please help me... my silver arowana is 7 to 8 inches is frequently swimming at the bottom and also has little cotton like fungus on his mouth ...i have currently changed the water 30% and added 5 to 6 drops of blue liquid anti inch medicine in my 78 liters tank n after that he started opening is mouth little wide randomly ...I am not getting what is happening to my aro...please help me out