My betta has been acting very sluggish for the past week. Originally, I thought that he was upset about the filter's current being too strong, but even after I took it out, he still behaved the same way. Usually, when I tap the top of the tank, he'll swim up curiously and jumps for food, but now he barely pays attention to anything other than resting. Any ideas of what is causing this?
What size is your tank? 2.5 gallons
What temperature is your tank? 74-76 F
Does your tank have a filter? No
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? N/A
What type of food do you feed your betta fish? Omega One/Hikari pellets and FD bloodworms
How often do you feed your betta fish? 2 (afternoon), 2 (night), 3 worms per week
How often do you perform a water change? Twice a week
What percentage of the water do you change when you perform a water change? 25-50%, 100%
What type of additives do you add to the water when you perform a water change? Jungle Start Right
Have you tested your water? If so, what are the following parameters?
Symptoms and Treatment
How has your betta fish's appearance changed? He used to be a bluish purple to red, but now his color is a little more faded and a solid light purple.
How has your betta fish's behavior changed? Barely eating, not excited about anything, and does not move about much.
When did you start noticing the symptoms? A bit more than a week ago
Have you started treating your fish? If so, how? Well, I took out the filter to see if a calmer surface would make him more comfortable. It did for a bit, but he's back to hiding and resting again.
Does your fish have any history of being ill? He had an issue with tailbiting and not eating when I first brought him home, but haven't had any other major problems since November.
How old is your fish (approximately)? I have had him since mid November, but I'm not sure how old that makes him.