white spots on fins

Yesterday I noticed this spots on my fish's fins. I have two fishes, only this one has these for now. It's a male, three tails, less than an year old.

My male zebra daino has transparent white bubble spots on its fins only for the past few months. I tried treating him with API super ich for about 1 week in a separate tank, but it did not cure or reduce the spots. I then tried putting him back in the community, raising the temp to 86° with salt...

Help! I haven’t had an aquarium for years, I set up a 20 gallon freshwater community tank for my daughter who has autism. The tank has beeen set up for several months with no problems. 3 weeks ago I bought 4 young blue rams at a reputable breeder at an aquarium club to add to the tank. I wanted...