I joined this forum just to ask about this. I have had betta fish on and off for about 8 years. Every time I get one I research them to remind myself about their care. Their aquariums have gotten significantly more complex as time goes on and I learn more. I am not free of mistakes, but my goal is always the best possible care for my pets.
Right now I have two betta fish, a beautiful crowntail male named Roshan and a little veiltail female named Aloine. They are in a split 5.5 gallon tank with filter and heater.
I had to leave the state for the summer, so I left my fish in the care of my family. Turns out not only did the filter die, they only changed the water once. So I came back to an algae covered tank and this.
I think it may be fin rot.
This poor fish has had awful luck with his fins. When I first got him, he was grey and pathetic looking and his fins looked awful. With real food, and a decent tank, he turned out to be iridescent purple, blue, silver, and red.
Then my roommate's pet rat knocked down the barrier back when I had another male in the divided tank, and the entire crowntail edges of his fins were eaten off. (About a year and a half ago) Just when he had nearly his full gorgeous fins again, they appear to be breaking off.
I intend to go to the pet store tomorrow to get him his own tank to heal in. Does this look like fin rot to you? If so, what should I do to help his fins grow back to their full gorgeous crowntail glory?
I should mention I had plastic plants in the tank as well, as I did not know they would tear the fins. He likes to sleep on them, so I think that contributed to the problem.
So my shopping list for tomorrow:
-New tank setup
-Live or Fabric plants
-Fin rot meds?
-Hiding places that won't hurt fins (suggestions?)