So I was gone over the weekend and when I came back this morning, my Male Kribenisis has a weird lump on his head. Its not his colorful ksin color but a more of a pink color, honestly it could be compared to the beginning of a flowerhorns Kok. My only guess is that he jumped out of the water and hit my metal mesh tank cover. But i think this is highly unlikely considering I have never had any of my fish jump. He is in a 20 long planted, with a Ctenopoma, Rubber lip pleco, Female Krib, and Raphael cat. The tank has been up and running for a long time and has had no real health issues prior to this. What should i do? I already bumped up the temperature....