i recently started a 15 gallon tank and have rosy red minnows in the tank in order to cycle it. they are very wired and scared even though i have provided plenty of hiding places. why is this? are all fish going to be like this? they just jet from side to side and never swim around calmly. water parameters are fine, keeping ammonia (which is just about gone) and nitrates under .25. i really hope the fish i am planning on getting (rams or gouramis, cories, loaches) are not like this. please comment.