Found Cobalt this morning with strange pink spots on his scales. It's like his blue scales have turned a pink, fleshy color (picture attached). It's been over a year since I've had him and this has never happened. I'm thinking it may be related to the mini-cycle I am finishing up since I changed my substrate and decor to sand and driftwood. Perhaps it's the change in pH from the tannins? Just performed a 50% water change...any ideas?
What size is your tank? 5 gallon
What temperature is your tank? 78
Does your tank have a filter? yes
Does your tank have an air stone or other type of aeration? no
Is your tank heated? yes
What tank mates does your betta fish live with? nerite snail
What type of food do you feed your betta fish? pellets
How often do you feed your betta fish? twice a day, ~5-7 pellets each time
How often do you perform a water change? weekly
What percentage of the water do you change when you perform a water change? 30-40%
What type of additives do you add to the water when you perform a water change? conditioner and sometimes flourish excel
Have you tested your water? If so, what are the following parameters?
Ammonia: close to 0 ppm, definitely not greenish color which would mean .25 ppm
Symptoms and Treatment
How has your betta fish's appearance changed? spots of pink, fleshy scale color, some of the coloration on the top fin (see picture).
How has your betta fish's behavior changed? no notable behavioral changes
When did you start noticing the symptoms? about 1 hour ago when I checked on him this morning.
Have you started treating your fish? If so, how? Performed a water change
Does your fish have any history of being ill? no illness besides fin rot once and general stress spots that went away.
How old is your fish (approximately)? likely around 1.5 years.