Can you put guppies with black phantom tetras?

Yes, guppies can be kept with black phantom tetras, as both species are generally peaceful and have similar water requirements. However, it's essential to ensure that the tank is spacious enough to accommodate both species and that there are plenty of hiding spots and plants for security. Keep an eye on their interactions, especially during feeding times, to prevent any territorial behavior. Overall, they can coexist well in a community tank.