I got home today and found my new(ish) halfmoon male is missing a huge chunk out of his tail! I don't know how this could have happened! I can't imagine there's anything in there he could have caught it on; the filter intake is covered with pantyhose, all of the plants are silk, and his cave is a smooth clay pot. Could it be tail-biting? If it is, what can I do to prevent this from happening in the future?
What size is your tank? 2.5 gallon
What temperature is your tank? 80
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? None
What type of food do you feed your betta fish? Omega One Pellets
How often do you feed your betta fish? 2xper day, 2 pellets each feeding
How often do you perform a water change? 3xper week
What percentage of the water do you change when you perform a water change? 50% twice a week, 90% once a week
What type of additives do you add to the water when you perform a water change? Prime
Symptoms and Treatment
How has your betta fish's appearance changed? Fin Damage
How has your betta fish's behavior changed? No
When did you start noticing the symptoms? Just now
Have you started treating your fish? If so, how? No
Does your fish have any history of being ill? Recovering from fin rot
How old is your fish (approximately)? 1 yr?
I got him about three weeks ago, he had fin rot so I did a salt treatment for eight days. He's been in his regular tank for a couple weeks now and I just noticed this today! I have no clue what could have caused it, and I'm terrified that it will happen again.
Is there anything I should do to treat him? I would normally do water changes twice a week, but because he recently moved out of qt for fin rot, I have been giving him an extra one. He had one last night. He was fine this morning, but could the water changes be stressing him and causing tail biting?
I am reluctant to add aquarium salt because he just had a salt treatment so recently, and I think my water change schedule should be keeping his water conditions pretty good. Is there anything I should be doing while he heals?
(the white spots are dust on the tank, they're not on him)