We went to our local petco and bought a pleko fish to add to our 2 year old aquarium with 3 hardy 3" goldfish. 4 days after we introduced the seemingly healthy pleko, all of our goldfish have died. The pleko had velvet!!! Of course he's the one who survived this whole ordeal even after immediately starting treatment once the fish were behaving differently. WE ARE FURIOUS!! I cannot believe that they do not maintain their fish better! Our fish were so healthy and happy and we are extremely saddened by their deaths. All the... read full review »