I have a 30 gallon tank, 6 White Clouds, 2 Weather Loaches. My White Clouds appear to be picky eaters. I have had them for 4 days, tank is 2 weeks old. Weather loaches acquired 3 months ago. Ammonia .25, nitrite 0, nitrate 0. I have tried flakes, white clouds spit it out. Tried shrimp pellets, some ate, most spit out, or ignored. Tubiflex, some ate, some ignored. I even tried betta nuggets, ignored. Loaches are in heaven, as they get all the left overs, which is plenty more than they need. I do know the minnows like frozen (thawed) blood worms, but I like to serve that as a once weekly treat. What do I try next?