Hello guys, I'm hoping you can help me out here. I'm not sure if he's sick, stressed, or what. My crowntail has lost his tail. Otherwise he's perfectly fine and his behavior has not changed.
I've attached a before and after picture of Spike, here is an album of more pictures: http://www.bettafish.com/album.php?albumid=2530
What size is your tank? .9 Gallons
What temperature is your tank? 82F
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? None
What type of food do you feed your betta fish? Top Fin Betta Bits
How often do you feed your betta fish? 1 Pellet a day
How often do you perform a water change? Every 4-5 days
What percentage of the water do you change when you perform a water change? 100%
What type of additives do you add to the water when you perform a water change? Water conditioner and Tetra Lifeguard (we have 6 office bettas and are on industrial water, we lost three due to fungal infections in the first month, since I started using the Lifeguard six months ago none have died)
Have you tested your water? Not yet.
Symptoms and Treatment
How has your betta fish's appearance changed? He is a crowntail and has lost most of his tail. It has just now started growing back a little from what I can tell.
How has your betta fish's behavior changed? It hasn't. He's still a happy, extremely active little guy.
When did you start noticing the symptoms? I was out of town for a couple of weeks and his water did not get changed (despite my coworkers saying they would), when I came back he looked like a little black body swimming in the water with no tail.
Have you started treating your fish? If so, how? I have been religious about changing his water and I threw away his tree in case he was rubbing up against it. I also bought BettaFix and have begun adding that to his water in small doses.
Does your fish have any history of being ill? No.
How old is your fish (approximately)? I bought him from PetsMart at the end of February this year (2011).