Betta Fish Diseases and Emergencies
Hi I'm new to fish keeping so please be kind. I've had my first Betta, Dexter, for about a month now. I cycled his tank before I got him etc. However he has fin rot, or so I think, his tail has gone all ragged and is getting shorter. He is kept in a 5gallon tank with heater 78℉ and a filter, he...