So I have a 46 gallon bow front aquarium and in it I have 8 tiger barbs 3 adolfoi cories (I had 5) 2 pearl gourami 5 cherry barbs and 1 green phantom pleco. I have had this tank since beginning of December and the only fatalities has been in the past week. 8 days ago 1 of my cories died, I took him out did a 50% wc because it was that day anyways and today another one of my cories died bringing me down to 3. I checked all my levels and they look fine and all the fish are active and haven't seen anything weird except sometimes I'll have a cory swimming in the middle but I never thought anything of it. My question is what could have possibly caused these deaths? And will me 3 cories left be okay with only 3? I don't have the money right now to buy more of the adolfois.