I can not find a clear answer on whether or not fish have emotions. When interacting with them, it seems they do and when researched you'll find several "studies" that claI'm they do have emotions. Yet if you browse forums like this one, many people claI'm otherwise. I'll be conducting my own "study" with my own theory. I don't have a bunch of fish or different types to use unfortunately, I only have a single female Betta. However, I plan on doing things like turning off her light, putting things outside her tank, putting my hand in her tank, exercising her by letting her chase her tongs, removing and switching around her decor, etc. to guage her reactions to see if it seems to change her behavior. Does anyone have any other ideas on how I can conduct this project? My options are very limited with a single Betta but I'll do what I can.