May be hard from pictures but can anyone tell me what this white thing on the tail fin of my betta is? Is it Fungus?
He still has a healthy appetite but he does seem to be a little more lethargic than usual. Only really seems to swim around when I come close to the tank or otherwise just for short periods of time in between longer rests.
I've had him for just over a year and a half now. He is in a 10 gallon heated tank with a filter. Usually I keep the tank at 78 degrees F but now in the summer it's closer to 85 degrees F.
I've tried frequent water changes with aquarium salt but it doesn't seem to be helping. Should I get some fungus medicine? If so what would you recommend? Or does this look like something other than fungus?
Thanks for your help.