This morning I woke up and all my fish are missing chunks out of their fins. None of them have a history of tail-biting. I'm afraid it may be some type of fin melt or something! I noticed Daisy had a big chunk out of her anal fin last night, but didn't worry about it. Then this morning I noticed that the edges of her tail look really ragged. Then I noticed that Sully has a big chunk out of his tail, and Milton has a big chunk out of his dorsal that looks like it's been melted off. Help! What medication should I buy, I have AQ salt already! I did a 100% water change on all of them last night!
What size is your tank? all are 2.5 gallons
What temperature is your tank? 75-80 degrees consistently
Does your tank have a filter? no
Does your tank have an air stone or other type of aeration? no
Is your tank heated? not at the moment, we've had a major heatwave and the heaters were making the water too warm.
What tank mates does your betta fish live with? none
What type of food do you feed your betta fish? Omega One Betta Buffet Flakes, Top Fin betta pellets and the occasional freeze dried bloodworm
How often do you feed your betta fish? once a day in the evening, but Milton gets fed more often because my mom feeds him.
How often do you perform a water change? twice weekly, one 50% and one 100%
What percentage of the water do you change when you perform a water change? see agove
What type of additives do you add to the water when you perform a water change? stresscoat, and that's it.
Have you tested your water? If so, what are the following parameters?
Symptoms and Treatment
How has your betta fish's appearance changed? All of them are losing finnage! huge chunks missing, Milton appears to have a spot that looks melted!
How has your betta fish's behavior changed? No behavior changes thus far that I can tell!
When did you start noticing the symptoms? Last night on Daisy, this morning for the other two!
Have you started treating your fish? If so, how? Not yet, leaving for Petsmart now, will check this on my phone for any feedback!
Does your fish have any history of being ill?
How old is your fish (approximately)? Daisy is almost two, Sully and Milton are nearly 1 1/2.