You could post a couple different pictures, perhaps of more nodes that look similar, and maybe some broader views of your plants. Definitely looks like a male but with how close up the pic is, it is possible that its a female and simply hasn't shown pistils yet. Or it could be a herm? unless the whole thing looks that way.

You should take this opportunity to document every little detail you can notice about that plant to help you out in the future with identifying gender. Sometimes you'll notice that there are other characteristics of your plants that are different whether its male or female. You might be surprised with what you notice if you take your time and pay close attention. I just found a male in my grow room as well and I've noticed several big differences between him and the females such as structure of the plant, coloring, and growth rate.