25g stock discussion help

So tank isn't cycled or cycling yet. I'm just getting feedback before I do start. I have searched a lot of fish and stuff so that's why I kind of stuck with what I've listed.

The random death was from my current tank so that's why I was lost as to why it did that.

Also just wanted to see what everyone thought and I do know the benefits of low stocked tank but just wanna see if I can have a fish for there own job.

Sounds like true Scarlett's are what ill be going with tho over blue legs. Will they grow aggressive as they age.. Heard blue legs do so that's why I asked what one will do best. This is gonna be a front tank to my futur plans in the hobby so it will be up for awhile once its up and running.