I know they are brackish water fishes from what I read all over the internet..But a small minority of people have kept these catfishes in freshwater for a long time..Like I know one person who bought them as babies and now are 10-11 inches long..And that person kept them in freshwater only..Any experience with keeping these fishes in just freshwater? And please no links on internet sites describing this fish because it probably is going to say, it is brackish and when it turns to an adult it needs more salt..