Some of you may know that two weeks ago I caught a Johnny Darter Etheostoma nigrum and I'm keeping it in a 10g tank. I've been feeding it frozen blood worm and it seams to be excepting them but should I worry about amonia from them? The darter has one tank mate, a juvanile Ameca splendas, and apears to be adjusting well to tank life. I have a wisper filter system in the tank that's made for a 30g tank and I do water changes once a week, is there any more that I should do? tanks for the help.