A 75 gal. Makes for a nice Mbuna tank.
Just construct a couple of good sized rock piles. Make sure the water has a PH between 7.8 - 8.3. Couple of quality HOB filters or one good sized canister, then your good to go.
Plenty of Mbuna varieties readily available to choose from. You can go with the 1x male to 3x-4x female plan or an all male community.
I keep plenty of Peacocks & Haps, but my overall favorites are the Mbuna.
Congo river setup is an alternative. Some of the smaller hemichromis type cichlids, a group of brycinus or congo tetras, riverine synodontis type cats. You could throw in some oddballs like butterflyfish, ctenopoma, schoutedeni puffer, maybe even a senegal poly. Ive always wanted to set up a congo river tank.
Gotta have Lake Tanganyika represented. I have a colony of calvus as they are my favorite Tangs, and a colony of similis shellies. Plus Synodontis petricola (the real thing) in that tank which are not always best with shellies, but the Synos are not bothering the similis for now.
You can see from my signature I have one of each. Been doing this 15 years now. I have kept Victorians in the past and will again, but they are definitely one male/species if you want color. Females are silver.
Agree with ransome. A 75 tang tank would look awesome. A school of 15-20 Cyprichromis for the upper levels, some neolamprologus leleupi for a rock pile or cylindricus and maybe 4 calvus..... would look nice.
I am also a fan of a Victorian tank. Would like to set up a species only of zebra obliquidens.
Most Synos sold as petricola are lucipinnis. Nearly impossible to get true petricola (as identified on Planet Catfish) I have found for many years. All my lucipinnis were bought as petricola.
Replace ocellatus with T temporalis. More compatible diet and the aggression levels are closer. Ideally, I'd do > 100 gals tho although a 75 with sight barriers can work