I hope not! Which fish looked pregnant? I don't think any of them are. I know my Gourami is pretty large but that's about it.
I started out with all fake plants a few years ago, and after about 4 months decided to get real plants and just threw them in at random, by sheer luck it turned out as well as it did. I actually designed the tank around my bn pleco, because I really wanted one.
40G planted community
3 5G planted betta tank