I have a 3.5" pictus cat in a 20g, with a 3.5" rainbow shark and 3 tiger barbs. I woke up this morning to see my pictus's barbel curled up and short. I am so disappointed because he has been in perfect condition since I got him about 9months ago. Is this normal or is this something I should worry about and treat for. Just recently I treated the tank for ich with coppersafe. I have done 1 partial water change (35%) since (last weekend) treating 2 weeks ago. I am planning on doing another water change today or tomorrow(I try to do it once a week). He doesn't look real happy with his short barbel. His fins are all up and look healthy.