My wife wants to change her 300 1/2 cylinder into an endler's livebearer tank or fill it with galaxy tetras.
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I'm trying to steer her towards a pea puffer breeding colony.
I kept 20 in a heavily planted 100. There was some sparring but, no blood. Plus, I kept finding tiny puffer fry among the plants.
In a way, it's a more extravagant thing to do than having a big tank with big fish, because you could house any of those fish in a much smaller tank, but you just have to ball out haha. I totally understand why it's not commonly done, but I would love to see a tank with 40 kuhli loaches for example