I got a new betta from a large chain petstore 2 weeks ago. He's very active, flares when I put a mirror up, gobbles up anything I give him quickly, swims around when we come home or watch him in his tank. He doesn't even hide in the silk plants or cave I bought him. He just likes to swim around the side of the tank closest to where me or my boyfriend are sitting.
Problem is his tail looks like it's degrading slightly at the edges. I noticed it the first 3 days or so that we got him but I wasn't sure if it would just go away. His tail originally had a perfectly smooth round edge and now it has a kind of "scalloped" look. It hasn't lost any length and his fins don't seem to be affected at all though. I tried to take a few pictures but they aren't very good quality as he doesn't stay still long enough! His colouring is still the same.
If you guys could help me figure out what the problem is and what I can do to help him get better than would be wonderful. I have aquarium salt (there's maybe about 1/2 tsp in his 5 gallon now) and an ich medication that as NaCl+malachite green (haven't used it) at home.
What size is your tank? 5 gallon
What temperature is your tank? 80 degrees far.
Does your tank have a filter? yes. submergible Elite Stingray 5
Does your tank have an air stone or other type of aeration? No
Is your tank heated? yes. adjustable heater.
What tank mates does your betta fish live with? none. can I put a mini golden clam in there with him?
What type of food do you feed your betta fish? betta pellets + freeze dried bloodworms
How often do you feed your betta fish? 2-3 pellets twice a day. bloodworms 2-3 times a week as a treat.
How often do you perform a water change? weekly (twice so far)
What percentage of the water do you change when you perform a water change? 25-30%
What type of additives do you add to the water when you perform a water change? Nutrafin Aqua Plus tap water conditioner, Nutrafin Cycle**, Nutrafin Betta Bowl Cleaner
**(I plan to stop using Cycle once I run out-- I just wanted it to start his aquarium because it wasn't pre-cycled)
Have you tested your water? If so, what are the following parameters?
Ammonia: 0 ppm
Nitrite: 0 ppm
Symptoms and Treatment
How has your betta fish's appearance changed? smooth tail edge to scalloped edge
How has your betta fish's behavior changed? no
When did you start noticing the symptoms? 1.5 weeks ago (a few days after getting him)
Have you started treating your fish? If so, how? a bit of aq salt in his tank
Does your fish have any history of being ill? don't know
How old is your fish (approximately)? don't know. took him from pet store 2 weeks ago.