Hi everyone. Im in need of help here. I had two 5 inch gars..not sure what type of gar. Ive had them for 2 weeks.They are all good until few days ago i found out that both of them pale out and has lumps on the right side of their stomach. They stay in a 90cm wide and 40cm tall and depth, bare tank with one canister filter filled with purigen and also tons of media and two hanging filter filled entirely of media. A led light is only turned on after evening and less than an hour. I feed them live fish frm aquatic stores only. They are very active currently and didnt act strangely but whats worries me is they pale out and also the lumps. Please help. I dont want them to die or suffer. 
