Hello, Sorry I was answering another post that was asking for some help.Then feeding my Birds. Feed my fish after our communication.
The fish on your list are interesting. The Tetras might disappear if you couple them with some of your larger possiblities.
*Congo tetras are about 3 inches. In a group they would probably match some of the following smaller, peaceful fish.
I think all the fish on your list are beautiful. They are listed as mostly peaceful . They can become territorial and aggressive if you put females in with several males. It is difficult to sex them until they are older. You probably know all that
**Geophagus - peaceful. 2 inches. Good with any tetras.
**Festiviums-- Shy- Max 4 inches. Beautiful schooling fish good with Geophagus and tetras and Albino veil tail cherry barb, possibly not Tigers or Rosy Barbs. My veil tails are mild but lively and do not bother my tiny Emerald Rasboras.
***Blue Acara - peaceful, good tank mate for
****Bristlenose- peaceful.both 6 inches adult.
****Tapajao - peaceful.good tank mate.
****Rainbow Cichlid - peaceful, 3 inches,tankmate for 3 inch tetras .Festivium
****Rotkeil Cichlid- peaceful 9-10 inches
Suggestions:
****Albino Senegal-peaceful 8-10 inches also known as Bichirs, Dinosaur Eels good match for above cichlids, not a good match for tetrasor smaller cichlids or aggressive fish. Very interesting fish. Fossil ancestor's date back to Jurassic and even Carboniferous era. Has a primitive lung. Does not rely solely on oxygen in the water. I have 2 that coexsist with my large Tiger Barbs (Raised together)
TIGER BARBS might be alright with your peaceful cichlids. 3-inches fast moving semi aggressive, but do not bother my larger fish Angels, Bichirs.
****Rosy Barbs are a little more narrow than Tigers. In my opinion, more attractive than Tigers. These do not bother my larger fish either but will hassle the Tetras. Mine have.
****Those all have midrange to a little elevated PH levels 7.6-8.0 with some flexibility.
****As you know there can be personality variations that vary from the species general norm. I have been in the tropical hobby off and on since 1973, similar time frame as you? However cichlids only the last 9 years.
You are probably more expert in cichlids than I. I have studied them and have a few. I did some cross referencing research along with my own experience to make some of the above matches. So maybe this post can help you with your decision to go with larger or smaller.
Also as far as your dithers.
****GIANT DANIOS.-peaceful. 4 inches. Match any of the above. Maybe make the Geophagus nervous with their constant fast paced swimming. The long tail variety is very nice looking.
**Another match for your 6 inch cichlids possible choices is the
****SHORT BODIED ALBINO SENEGAL. A little smaller, 6-8 inches than the normal Albino Senegals, 8-10 inches. I would send you photos of my Senegals and Albino Veil Tail Cherry Barbs but my device will not this format. I don't why. It is an older device with some limitation, but reliable and sturdy. It will E mail or text photos. It will record videos but not sent them.
I also found photos online of the Senegals also called Dragonfish, and they really resemble the name. I would be careful in choosing a subspecies other than the Albino variety, because they can grow to 18- 24 inches. Everyone that has them on Monster Fish Keepers are big fans.
I would have gotten this to you an hour ago, but a good friend of mine called. Oh by the way; your black pea gravel sounds like it would really set off the colors of some the fish you might get. Also won't scratch your fish with rough corners. I have River Gemstones miniature agate pebbles, in opaque tan, milk white, and clear. Also round and naturally polished. I think they are easier to clean.
I will contact you if I come up with any spectacular ideas, or you can contact me if you want to talk further. Happy Fish Hunting,- always fun.
Incidentally, I didn't didn't choose the title " Fish Fanatic Apparently all new members get that classification for a while. A member told he thinks after a certain amount of posts, the computer advances you to Member? I saw people with title of "VIP Members" . They must have the Key to The Play Fish Club lounge. If I don't receive a post from you, I'll check in on your site from time to time---- Mont.