Hi there. I have a strange issue with 2 Alligator gars. I have had these fish for about a year and a half now. They have grown and been well up to this time. They are in a 2.5m diametre X 1.5m deep indoor pond. Tankmates are 2 small Pacus only. They are currently between 70 and 75cm long. We are at the end of a very cold winter. As soon as temperatures are better they are moving to their outside pool. I noticed 4 days ago that they have developed weird white patches on their bodies. No signs of this on pacus. Scales are not damaged and they are eating well and acting as usual. Water parametres are the same as always. I will try to attach pics. Any idwas and help are welcome. Many thanks. Shabeer. South Africa.