Fishy smelling starter
I'm in the process of making a new sourdough starter. I'm on day 4 and it's quite active and bubbly, but the last two days it smells a bit fishy when I take a sniff. I have minimal sourdough experience and have only made one starter before but I can't remember if it had this smell or not. I'm using 100% whole wheat flour, freshly ground, from a bag of grain that I've been using for months with no problems. Is a slight fishy smell normal at this stage, or should I toss it and start again?