20G Help/Advice

I have a 20 long currently in it:

Plants/Deco-
Java Moss
Java Fern
Water Wisteria
2 pieces MopanI Driftwood
Broken pieces of Slate
Faux Turtle Shell

Fish-
1x Red Cherry Shrimp
1x Guppy
1x Opaline Gourami
Some hitchhiker MTS

Anyways, the shrimp/guppy I can move to another tank but I'm thinking doing this:

1x Opaline Gourami
2x German Blue or Bolivian Ram
6x Tiger Barbs

I'm not algae infested so idk about adding a crowd of cories or an Otto. The Rams will be more or less whatever the lfs has at the time. So my questions are does the ram sex matter? 2 males won't kill each other. Breeding a not my thing so idc either way. The tiger barbs might be aggressive but if you guys think too much what's a good small school fish you'd put in?

 

I have a 20 long currently in it:

Plants/Deco-
Java Moss
Java Fern
Water Wisteria
2 pieces MopanI Driftwood
Broken pieces of Slate
Faux Turtle Shell

Fish-
1x Red Cherry Shrimp
1x Guppy
1x Opaline Gourami
Some hitchhiker MTS

Anyways, the shrimp/guppy I can move to another tank but I'm thinking doing this:

1x Opaline Gourami
2x German Blue or Bolivian Ram
6x Tiger Barbs

I'm not algae infested so idk about adding a crowd of cories or an Otto. The Rams will be more or less whatever the lfs has at the time. So my questions are does the ram sex matter? 2 males won't kill each other. Breeding a not my thing so idc either way. The tiger barbs might be aggressive but if you guys think too much what's a good small school fish you'd put in?

You're going to be overstocked with those fish. The tiger barbs need more space or else they will tear the gourami to shreds. IMO I'd skip the Rams if you already the gourami, a breeding pair of Rams might night take kindly to the gourami in a small tank.

keep the Gourami, add 5 cories, and a smaller schooling fish like tetras.

 

Tiger barbs need a 30 gallon minimum.

Also, Cories don't eat algae... I don't know why you'd discount them because your tank doesn't have any. A school of cories would do well in there.

Rams and Gouramis aren't likely to get along, so I'd skip any mikrogeophagus spp. Get a small tetra instead.

 

I would scrap the tiger barbs, they are better in schools of 10+ due to their aggressive nature and as a result wouldn't be ideal for a 20g. In my opinion the gourami and Rams could go either way, I think issues could arise if the Rams paired and attempted to breed. So I would suggest doing either a gourami OR a pair of Rams.

 

Wouldn't a school of 5-6 corys overstock me with the gourami and tetras? Assuming I'll get 5-6 tetras

 

The opaline gourami will get too big for a 20 long. You should rehome it.

 

You could do a dwarf gourami, 6 cory cats of the same species and 6-10 tetras depending on species.
That would give your aquarium some life without overstocking it, a sand substrate would be best for the cory cats.