That's really hard to tell with the pic. But you can usually tell with a male they will have the roundness on the top of the head, sticks out more than females. Females are more straight. And females have more fin on top of the head. So if there's more of a curve from mouth to top of the start of the fine it's most likely a male. If it's more flat, it's most likely female. And a female will start picking at stuffs in the tank, like she's cleaning it. Watch for that. But it Looks like a male to me. Good luck on finding a mate.