advise needed

Back in November, I started a planted 2.5 gal tank to use for shrimp. Within a good couple weeks, it was home to copepods, then later ostracods. Introduce some detritus worms from another tank, and blammo!—mini community. Well, fast forward to a couple days ago and I decided to use it as a...

Hello! I've had four neon tetras for a few days now, and I don't really know which gender they are. If anyone could give me some tips on how to sex them, that would be great!