When I looked more closely at my aquarium and tried to identify the organisms with the help of multiple books and some professional help, I found many organisms that I didn't know I had in there. I found multiple "Cyclops" creatures and their earlier stages. I found some tiny shrimp and some annelids. My most profound discovery, though, was the "Pterodina Patina," which looks like a pot with a small mouth on top and visible organs inside. It was clear and transparent. It closed the small mouth on top when tiny particles got into its range.
"Fresh Water Biology" by Henry Baldwin Ward (Figure 942)
Also, a piece of food was added to the tank.
"Atison's Betta Food" made by Ocean Nutrition, Aqua Pet Americas, 3528 West 500 South, Salt Lake City, UT 84104. Ingredients: Fish meal, wheat flower, soy meal, krill meal, minerals, vitamins and preservatives. Analysis: Crude Protein 36%; Crude fat 4.5%; Crude Fiber 3.5%; Moisture 8% and Ash 15%.