Races

Asari
Salarians
Humans
Turians
Volus
Krogan
Quarians

Races to be added possibly
Drell
Vorcha
Batarians
Geth although i think these are better left as NPC's

Max age
Humans: 150 (if lucky, said by Shepard to Wrex).
Salarian: 40
Turians: similar to humans if I remember correctly
Qurians: 85
Krogan: 400 to 500
Asari: 1000
Vorcha: 20
Drell: 85