I just got my 2nd Betta ( my first lived a year and a half and died) the new one has been in a 1 gallon tank with a filter now for about a day and half. I think he may be trying to fight his reflection and I don't want this to be something that will harm him. He doesn't slam himself into the sides
but he seems to nip at the glass all the time. He swims around fast like hes running from something then nips back at the glass across from him.
Is this what is happening?? Will this harm him??
Thanks to anyone who can help.