What are these "stale water" flies?

Factual Questions
1

I haven’t seen one in a couple years so my memory might be off but I’ve always wondered what they were.

They were tinier than houseflies with really delicate-looking, beige-ish wings, is about all I can describe them as. But they usually appeared around an indoor pool of stale water, especially in a bathroom, or sometimes around rotting food, but if they were fruitflies they were certainly different color, and body structure, than the flies I’ve seen on rotting fruit and in the lab.

2

Maybe a drain fly (also called “moth fly” because of the feathery antennae). These are tiny flies often found around stagnant water.

3

That’s it! Thanks!

4

This critters used to live in the used fixer in my darkroom. They must be really tough!

5

Now I remember that I was actually going to compare their wings to moths, without even knowing they were called moth flies.