I keep my gold severums with a male 10 cm Krib & some ruby barbs & a red fin shark & they seem to do good together. I have had the gold severum for about 1 year & I love the breed.
We have that same problem: Gold Severums got very large. They are the size of an adult hand now and have been in our tank about 3 years. I have learned that they will eat any fish of another color that are smaller. They do not eat our albino catfish that is small. We find that we are able to control their appetite by feeding them Krill every 2 days. They eat about 6 or seven each. They are becoming a bit of a hassle to upkeep. We can't put any new fish in cause stores do not sell fish big enough to compete with them. Also they seem to like to keep a section of the tank for themselves. They chase others away.
I've found the previous info very interesting. We have a small tank with a couple of Angels, an Opaline Gourami, a male Bristlenose, and two Gold Severums (not a 'pair'). Yep, a pretty 'diverse' bunch. We're relative beginners but the Severums are great teachers and we really enjoy them. The larger of the two 'owns' the tank but rarely even acknowledges the other occupants unless they're actually silly enough to get right in his face -- UNLESS it happens to be the other Severum. This poor dude gets hassled for a good couple of laps if he inadvertantly fills the wrong space at the wrong time. We also have 'lost' small fish on occasion and we reckon it just about had to be 'Peaches' varying his diet a little -- or expressing his displeasure at something we've done to upset him. We've had these two gold cichlids for about 14 months and are now planning a bit of expansion which will see the introduction of a 500 L cichlid tank to our lounge room. I'm sure they'll enjoy that -- and I'm sure the other non-cichlids will enjoy the extra space in their own tank!
I am just in love with my gold severum. He is now 4 years old and very huge. I have him in with 2 irridescent sharks, 1 red tailed shark and 1 extremely large algae eater, and the only problem I have is between the red tail and the gold severum. The red tail thinks he can nip at goldy's tail and expect him not to do anything about it but he does. He did have a mate but decided he didn't need one any more so he tore her lips off and she died. I love to feed him because he dances for me and does tricks. I guess you could say he's spoiled.
We purchased a small (about 2 cm) turquoise severum about 10 months ago. He was included in a 200 L tank with an African cichlid (Pseudotropheus crabro), five tiger barbs, three giant danios (targets), two spotted dojo loaches, and a large pleco. Believe it or not, this combination has worked extremely well with no regrettable results. The turquoise severum has grown to a beautiful 12 cm and has become the beta fish in the tank without much resistance. We would now like to separate the two cichlids, creating a smaller African aquarium and using the 200 L as an Amazon aquarium including the severum and his natural companions.
I have 7 severums (5 green & 2 gold), 2 firemouths, a clown loach, and a red-tailed black shark. They all get along quite well. They don't seem to get along well with angelfish. Many sources say that severums are shy fish. I've only found this to be the case when the tank isn't large enough or there aren't enough places for them to hide. Severums are excellent fish. One of mine will jump out of the water to grab black worms from my hand and he does a little dance when he sees the green food container. They'll eat anything you put in the tank. Mine like peas, bananas, earthworms, lettuce, chicken, and every aquarium plant I've put in there. I suggest using plastic plants =).