My betta, Azure, has been acting funky lately. He's always been a smaller guy, but recently he's been looking especially thin. After feeding today, I noticed he's lost a lot of color under his mouth, and has been showing some stress stripes. I tried getting him to flare at a mirror to get a better look at his fins (he's had a history of tearing them, I thought it may be an infection related to that), but he seems almost shy around his reflection, rather than flaring up as usual. I pulled him from the tank and am keeping a close eye on him, he seems a little less stressed in the QT tank, I think that may be related to the lack of water flow?
What size is your tank? 20gal (divided into 5 sections, but currenly only housing 2 other betta.
What temperature is your tank? 80f
Does your tank have a filter? yes (Aqueon quietflow 10)
Does your tank have an air stone or other type of aeration? Yes
Is your tank heated? yes
What tank mates does your betta fish live with? 2 other male beta in the divided tank, one he's lived with for about a year now and one that's a fairly recent addition.
What type of food do you feed your betta fish? Top fin /aqueon betta bits (rotated), occasional bloodworms
How often do you feed your betta fish? 2-3 pellets daily, fasting once a week
How often do you perform a water change? weekly
What percentage of the water do you change when you perform a water change? 50%
What type of additives do you add to the water when you perform a water change? Prime
Have you tested your water? If so, what are the following parameters?
Nitrate: ~30 ppm (Our tap water has nitrates naturally, which is why I use prime)
Hardness: don't have a test for this
Alkalinity: don't have a test for this
Symptoms and Treatment
How has your betta fish's appearance changed? Seems thinner, area around face turning pale (normally black, now a dull green color) Fins a little ragged but no signs of infection there.
How has your betta fish's behavior changed? Seems less active or agressive.
When did you start noticing the symptoms? This morning
Have you started treating your fish? If so, how? I've put him in a QT
Does your fish have any history of being ill? I've had fin rot issues in the past, treated with bettafix and had no further issues until now.
How old is your fish (approximately)? I've had him for about 8 months- a year, bought him as an adult.