Help With New 90L Tank

[Sam77]

Hi, I have a 90l tropical tank which I have cycled and had running for a month since cycling. I currently have 2 zebra danio's, a leopard danio, a pearl danio, a Bn pleco and 5 neon tetra. My problem is, I was advised that all the danio would school together, but in the 3 weeks I have had them, the zebra and leopard swim together, but the pearl has spent the whole time hiding in a cave, and only comes out when the lights are off, and only then swims just above the gravel. I have done some research and some people suggest that pearls should be kept in groups of at least 5 in addition to the other danios. Is this true? I would like some advice stocking the tank, as I plan to get a total of 6/7 danio, and possibly another 1/2 tetra as I have read that they prefer larger numbers. if I get another 2 pearl danio is it likely that they would swim together and maybe the other one would not be hiding all the time. I am not sure what to do, as I really don't want a tank with just danio's, I would love some rasbora's, and maybe some cory's or a gourami, but i am worried about the stocking level now. What would you suggest adding, to make a nice interesting community tank, without having stressed out fish?

I also have lots of live plants, as I read that rasbora's like heavily planted tanks.

Thank you.

 

[Joshwainwright]

Yeah, all of the fish you have stocked except your bristlenose should be kept in fairly large groups of their own. Ideally, you would want 6 or more zebra danios in total as well as 6 or more leopard danios and the same with pearl danios. Obviously, this isn't really possible in a 90L as you'd end up overstocked despite them only being small fish.
 
Personally, I'd try and re-home the leopard and pearl danios and add some zebra danios and 2/3 neons. That could prove difficult though so as long as you make sure you don't end up overstocked, the best bet may be to just add a few of each for a bit of company. They're still not going to be fully comfortable and as active as they would be but it improves the situation. 
 
Alternatively, you could always upgrade and get a bigger tank