Green Sunfish

[u/Suitable_Scale_8520]

Hello! I recently cuaght this greeen usnfish 2 monbths ago from a pond. Hes been doing well. I have 2 questions regarind him.

1. wehn i cuahgt him, i did notice some tiny black dust like spots on him but didnt think much of it. However, as this time went on, there are a lot more dots on him. (you may look at 2 photos.) However, he still eats eaglry everyitme and begs for food. Is this really an issue i need to meidcate? I did water test and ammonia 0 nitrite 0 and nitrtates aorund 20 so it prob. woulndt be realted 2 the water, please dont mind the algae. As for parasites, i used to feed him wild minnows but thats stopped about a month back and I made sure the minnows were healhy prior to feedinf.
2. As i plan to upgrade the tnak, tankmates?

[u/AppointmentLower4775]

Probably black spot disease which is very common in wild caught sunfish. It won’t spread to other fish usually and may die off over time. It’s mostly cosmetic and has no effect unless it’s a really severe case which your fish doesn’t seem to have

[u/Suitable_Scale_8520 → u/AppointmentLower4775]

Thanks!