Had my Yasha for almost a year. Had an original pair with a Tiger, the first Tiger got crushed after a week. Got him another Tiger Pistol, supported the rock and Yasha had been happily paired with him for almost 11 months. About 2 weeks ago the Goby had not come out of the cave. Today I was shocked to see him out and in the corner of the tank barely breathing. He had two distinct marks on his swollen belly that looked the size of the claw and was covered with fuzzy fungus. He swam back into the cave for a sec, came back out and did a horrific death spiral/squirm. I ended up dispatching in ice water. Would not recommend Tiger Yasha pair. RiP Gobyone.