Thermophile
BiologicalPre-sapientNot at creationThermophile is a biological species trait in Stellaris 4.5.2 that costs no trait points. It is for Biological and Pre-sapient species, added later, not at species creation. It gives +10 Leader Lifespan and +20% Volcanic World Habitability. Opposite of Lithoid and Organic.
What Thermophile does
Modifier lines by where they apply, as the game prints them; then the trait's own effect text.
- +10Leader Lifespan
- +20%Volcanic World Habitability
Alloys Upkeep per 100 
Pops: +$@living_standard_alloys_normal$
- Volcanic World Habitability: +20%
- Minimum Habitability (Volcanic World): +50%
- Habitability on Cold worlds: -30%
- Leader Lifespan: +10 Years
Opposite traits
A species cannot have this trait together with any of these.
LithoidWho can take it
Species classes: INF, PRE_INF
When modification offers it
species_potential_add and species_possible_add: when genetic or robotic modification shows and allows the trait (the wording is ours).
- Never (switched off)
In the game
This species evolved tissues of metallic alloys to grow and thrive on hot planets where traditional organics would cook. These alloyed cells are slower to degrade and are replaced infrequently, delaying the onset of age-related diseases. They also conduct cold temperatures, which can threaten their health in colder climates.
Thermophile: questions
How many trait points does Thermophile cost?
Thermophile costs no trait points (common/traits, Stellaris 4.5.2).
What traits are opposite to Thermophile?
Lithoid and Organic: a species cannot have both.
Can I pick Thermophile at species creation?
No — it is not offered when a species is created (initial = no); it comes from genetic or robotic modification, events or other effects.
What is the ID of Thermophile?
trait_infernal
Source: common/traits/16_infernals_traits.txt, Stellaris Cygnus v4.5.2 (9776).