betta fish agressive

Hey guys, I am brand new to this site. I had joined to ask some questions about my sweet betta fish. I had bought a Top Fin Betta Fish (2.5 Gallon) tank for my Betta I have own year (Alfred) (Alfred had a .5 gallon tank for a year so my fiance thought it was time for an upgrade) and my new one...

My red spade-tail female's name is Higgs, named after the Higgs Boson because she darts around and swims like a maniac, kind of at the speed of a walking Higgs Boson (nerd joke). I swear to god that she only stops to take a breath right before she passes out. I don't know if she forgets or she...

Hello, My fish's tails are shredded. I don't know why. I am pretty sure it's not finrot since I just got him yesterday and cleaned his tank. I am wondering if he may have gotten sucked into the filter and got his tails shredded. :( Also there is another issue: my fish is being overly agressive...