I have a question about my Betta. He has been sick but I treated him and he is doing much better. He has become a very finicky eater since being sich, and that is a problem - won't eat pellets any longer. Mainly, I am wondering - you can periodically see excretions (I think) hanging off and trailing in the water. Sometimes they look like a string with an egg sack on the end. I never see the excretions of my other betta?