help!!

Please help me!!! I bought this wonderful OB peacock at the size of one inch, now he is about 7 inches. I have only had him for about a year now, and he is the tank boss, he is the only male with three females and a bunch of fry. Yesterday he started to develop cataracts, one eye was slightly...

My tetra has a black spot on his back/ fun I have no idea what it is