Maggots thrive in the dark because there less likely to be killed by predators like birds etc.
Maggots prefer humid and the environment with feces, dead animals, or rotten food waste.
Some maggots such as housefly maggots prefer decomposing meat or flesh. Although some maggots live in decomposing logs or trees. These are just a few places where maggots live.
The undergroud is an advantage to maggots because maggots like the dark and it has lots of nutrients ( like dead bodies) that they need to grow into flies. Also predators can't see them.
Planaria prefer dark environments
If they have a choice of wet or dry they will choose wet and if it was light or dark they will choose dark.
dark
because it is warm, dark, damp and they're safe from predators
Dark and damp
they like dark
To be honest crab prefer it dim,dark
They would prefer light.
No they will not. Although maggots can eat sugar, they prefer rotting flesh and fruits for the bacteria which provide them nutrients.