Aggressive Loaches Not Clowning Around - The Most Respectfully Submitted Email EVER! 10/28/05 Hi, Kindly accept my sincere regards for such a excellent site. I set up my first 15g tank in July this year, did some stupid things, some wise things (reading your site) and have finally stopped killing my fishes. In fact I now have now a second 55g tank with 3 goldfishes and a freshwater minnow called tiger shark My question is regards with my 15g tank, it has a filter, heater, and is a established tank for three months, original occupants were goldfishes now shifted to 55g. 15g tank has two silver dollars 1.5', 2 platy, 2 sword tails, I wanted to add some loaches. I read extensively and come to conclusion that clown loaches were schooling fishes and decided on a minimum of 4 fishes 1.5'. The fishes sold to me do not seem to be clown loaches although they look like clown, this fellow said that they are called 'Rani loaches' and are same. However my problem is that these loaches have started picking on dollars, striking at their eyes or base of tail. This problem is now so acute that dollars are now showing signs of stress. Kindly guide me why is this happening. If I separate the fishes which can I put with goldfish or should I return them. Thanks Sandeep R < I went to loaches.com and could not find any fish listed there when I searched for rani. All loaches are not alike. Some are small and very peaceful while others can be very aggressive and get large. Please go to loaches.com to research the right loach for your particular tank situation.-Chuck>