In the picture submitted you can clearly see a healthy betta fish in the top 3 pictures. Those pictures are from May 2017 when he was first brought home from the pet store. The bottom 3 pictures are from last night.
This is a betta fish. I wasn't aware of the type of care that these fish truly need. I did however do weekly 100% water changes adding conditioner to the water each time. I fed him 2x every day. He was active sometimes but preferred to stay in some artificial plants found in the tank. Last night I changed the water and that's when I noticed something was truly wrong. After I put him in the tank it stayed at the surface and I could see a clear struggle to breathe. Or as you can see in the pictures, it sunk to the bottom and stayed there for a while. I tried feeding it but it would not move. It did not even acknowledge the food. I am ashamed to admit that I have yet to get a kit to test these values so I am unaware.
Currently it is in a 1.5 gallon tank. This tank has been set up since May 14 2017. I do not have a filter. Again, I've been misinformed about the care that these fish need. I read online that if you do weekly 100% water changes you do not need a filter.
There is only 1 fish in the tank. I've had this fish for about 4 months
I have added a new betta hammock last night. Also, I added a heater about a week ago. I also noticed that this new conditioner that I bought has white flakes in it? I have purchased this conditioner before and it did not have white flakes in it.
I know I have failed as a fish owner and I did not realize the damage that I have caused it. I know it is not much but I recently order a new tank and am waiting for it to arrive.