Sirian alien races are very different. Some extraterrestrials from the Sirius star system are benevolent and good (mostly around the Sirius A), others are evil (mostly around Sirius B). There are many humanoid and non-humanoid species. Some are reptilian, others are aquatic. Famous aquatic extraterrestrial race, is the Nommos people, who visited Earth many years ago, and contacted the Dogon tribe from Africa in the region of Mali. They gave this tribe some incredible astronomic knowledge, which exceeded the knowledge of the scientist from this time. There are many Sirian aliens who are helping Earth to ascend, alongside the Pleiadians and Andromedans.