Yes, German blue rams can live with guppies. Unlike other cichlids, German blue rams are quite peaceful, so they get along well with non-aggressive fish.
In fact, German blue rams thrive best when kept in a harmonious environment, so guppies would be excellent tank mates for them. Just make sure every fish has plenty of space to swim around to prevent any territorial conflicts.
Aside from guppies, here are some other species that would make good tank mates for German blue rams:
- Kuhli loaches
- Neon tetras
- Cardinal tetras
- Rummy nose tetras
- Dwarf gouramis
- Dwarf cichlids