Hi, i have a walking catfish that ive had for 2 years. Every few mounth he was developing small pink growth on his head that disappeared a few weeks after with medical treatment. about 2 weeks ago he developped them again. 2 days ago he stopped showing interest in food and today he started to show nerological sighs as iirraticly swimming, swimming upside down,twitching his body while swimming. I wanted to ask for help in diagnosting and treating this disease. He is in a small tank about 50 L water p are 0,,0,10.