Advice for adding new fish to 200l tank

[Farming Frenzy]

Hello,
I have had my 200L for about a year or two now. The current occupants include:
2 dwarf gourami both males
5 peppered corys
1 danio
7 neon tetra
5 gold barbs
They all live very happily, have plenty of plants and room and are all healthy.
I am thinking of getting some more fish, but i need some advice on the temperament,Ph, etc of the fish I'd like to add:
Rhombo barbs
Red rainbows
Adolfo catfish
Rummy nose ( not 100% sure to get these )
Cherry barbs

I know thats a lot of fish but I'm not 100% sure to get all of them, I'd be happy with the adolfo catfish, and the rhombo and cherry barbs. Please any advice or help would be great

Also info on my tank-
200l
Substrate is black, very fine/ gravel like but not quite sand.
I have lots of indiqn fern, plan to add more and maybe java fern too.
There is a large driftwood with rocks underneath, the catfish love hiding in there.
Ph is 6.5

 

[Windrider]

Had to do a bit of liter to gallon converting - you have somewhere between a 50 and 55 gallon aquarium to us Americans. ;-)

You've got a peaceful, mostly acid-water-loving community going there. You definitely don't want to mess that up.

Of your wish-list fish, most should be fine. However, the Red Rainbows are going to be a bad idea. First, they don't do well in low Ph; they like alkaline water (your plants, tetras, and corys won't appreciate you messing with that). Second, while not exactly aggressive, they are large boisterous fish, up to 6" (15 cm), and they will out-compete all your other fish for food and likely make them hide as well.

The Rhombo Barbs also may be a bit to large and lively when full grown. While they are not as nippy as Tiger Barbs, they are still of the same ilk - I would be cautious about adding them. The Cherry Barbs should be excellent, though. I have had Cherry Barbs breed in my planted tanks without me knowing until I saw the half-grown fry swimming around.

Rummy Nose are a wonderful tetra. When I still had my 150 gallon planted tank, I had 6 Altum Angels, 50 Cardinal Tetras, 20 Rummy Nose, and 12 flag-tailed corys (plus a few other odd fish here and there). To me, mixing Cardinals (or Neons) and Rummy Nose is very attractive - they school at different levels and their colors play off each other.

The Aldolfo cats are another species of cory cat. While I don't have problems with hobbyists mixing different species of corys in their home aquaria, be aware that many serious aquarists will get VERY opinionated about this. Corys can hybridize producing "mutts." This is considered taboo to those who are trying to preserve the species - many of which are gone in the wild and only exist in captivity - so serious hobbyists will not risk "polluting" the gene pool of the different species. Me, I say your average aquarist isn't going to be breeding them or the other fish will eat their eggs anyway.

 

[Farming Frenzy]

thanks for the info, i think i will just get the rummy nose, cherry barbs and adolfo catfish. I don't want to breed the adolfo catfish i just wanted to buy it because someone was selling their tank and he needed a new home. I was hopping to breed my 5 pepped cory cats though?
Thanks again

 

[Windrider]

If you are going to try to breed your peppered cats (Corydoras paleatus), don't put the Adolfo cat (Corydoras adolfoi) in with them. If you condition the peppers for breeding, the Aldolfo will also be conditioned to breed. Once the peppers start courtship and breeding, the Adolfo with join in and some of your fry will potentially be hybrids. This is usually frowned upon by serious aquarists.