As I said in the first post, the molly is no longer in the tank - after the nipping started I segregated the molly and beta and then took the molly to the aquarium shop, where they graciously took him back. The molly was generally a peaceful fish when we first got him; he was of similar coloring to the beta and they got along well. After the molly got big and matured into adulthood, he got aggressive, even though he had been tank mates with the beta for some time.
I have a Kuhli loach and an Oto algae eater along with the ADF. I know quite a good deal about the different types of fish I added to the tank, and their compatibility with each other and betas. As for natural behaviors, so far each is acting within the "textbook" definitions of what is natural for that species, even with tank mates of the same species; I attribute this to the fish and frog being happy.
I also know about over feeding fish, which is why I feed very small amounts to my fish throughout the day. I think it is safe to say that all fish, not just betas, are going to eat whatever it "put before them" so to speak. However, this is not the issue that I presented.
My beta is not
eating the frog's pellets. He is picking them up and moving them to one particular area of the tank. He does not seem to go back and eat them, he is just moving them. If this were a dog, I would say the dog is taking bones and burying them in the same hole in the back yard. I was curious about the behavior; is this something anyone else had noticed with their betas, is there any documentation that is simply buried about this behavior? Is this something to be concerned about, or is it natural. So on and so forth; I am seeking information, help, and insights, as previously stated, in this particular behavior.