Stocking a 250g mbuna tank

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Well, I have another tank with a 13 inch Dovii, they can be "friends" in that tank :)

With rock work that I have now, it would be a miracle to catch any fish...
 
I did have various mbuna and Victorians with haps and peacocks in a 72" tank. I didn't like the mix though...ended up taking them all out...even the yellow labs. I like only 18 individuals in all-male Malawi so our stocking preferences are very different.

I've raised demasoni for 10 years and would not put them in a tank with haps and peacocks.
 
IMO this is a classic entry level mistake. Buying pretty colored fish, and forcing them to fit into what you feel will work.

OBs are nice looking, but tend to be big aholes

They tend to be more on the aggro side of the equation, as they are a hybrid cross of mbuna/peacock. So not much different than everything else the OP has accomplished in this tank.

Even so I don't think a mbuna would chase one that far in a 250 gallon tank.
FYI - this tank is 80" long, only 8" longer than a standard 125.

I once watched a yellow lab cross a 72" tank of mine, and in the blink of an eye dispatch a sub dom male that was becoming a threat.

Mixing mbuna and peacocks is never a good idea, period. It's like tossing a bunch of skinny 15 yr old snot nosed kids into a max security prison, and wishing them good luck.

Nice sized tank, poor selection of fish.
 
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My peacock, only bothers the other peacocks. My blue and yellow mbuna, are oblivious of each other. Unless a female is laying eggs.
My male to female ratios are way off, yet the boys scuffle, but no harm is done.
I have 40 in a 75 gallon, and have not had any killed, a few nipped fins.
Food is plentiful, lots of caves, line of sight breaks, and easy escape routes.
 
IMO this is a classic entry level mistake. Buying pretty colored fish, and forcing them to fit into what you feel will work.

Nice sized tank, poor selection of fish.

This advice is probably correct.

I've always been biased toward neotropical cichlids, but my better half is more interested in African cichlids. We've had many different combinations over the years as we learned more about how to keep these fish.

The first thing to learn is the difference between mbuna and utaka. As a general rule, don't mix them... stick to one or the other in a mixed community tank. This does not mean that mbuna will get along with all mbuna or utaka will get along with all utaka, though I can attest that the utaka are much more forgiving with regard to aggression and mixing of species.
 
I also have introduced most of my fish as 3/4" long fry. So none of them were ever dominant fish. They survived to adults, by fleeing the big fish, and not becoming a snack.
If I did add a full grown fish, it would definitely get roughed up. Probably stressed into death.
 
I too had the advice 10 years ago that growing your fish together as juveniles would help them get along. I have not found that to be true. For me, when the fish mature they behave as expected regardless of their juvenile companions.

With 40 fish in a 75G, each fish does not even have enough bottom level to itself to pivot on it's axis. Little chance of claiming a territory, and lots of confusion. This is not my preference.

I'm looking for a slice of the Lake and a chance to see some natural behavior.
 
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It’s impossible for me to take someone serious when they refer to their mbuna as blue and yellow, and consider a dragon blood peacock, an Aulonocara. While some here have been playing around keeping these fish for a couple years, some of us have been keeping and breeding numerous species from the Rift Lakes, for decades. Many of those fish being wild caught specimens, many others F1. In my case the parents of some of the offspring were collected by a friend of mine, while working in Malawi for the late Stuart Grant. We are speaking from many years of hands on experience, and in some cases sharing our failures so others don't make the same mistakes.

While there are always exceptions to the rules, sexually mature Mbuna are typically far more territorial and far more aggressive than Aulonocara. I don't want anyone reading some of these comments and then attempting to mix a group of Aulonocara stuartgranti with a group of Metriaclima lombardoi. And LOTS of inexperienced people attempt just that, when shopping by color codes. That pretty little blue striped fish grows up and turns yellow, and one day kills most everything in the tank. If there are any survivors, over time they typically get sick from the constant stress, and die from bloat.

DJ has been a mod on cichlid-forum for a number of years, I was a mod there approx. 20 yrs ago, in the health/nutrition/illness folder. In the first few months as a mod in that folder I lost count how many inexperienced people killed their fish due to not understanding the basic fundamentals of keeping these fish in a closed system such as an aquarium. Over the years, there were thousands of sad stories, and thousands of dead fish. Many of them could have been prevented .....
 
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For my first tank, it was 8 months.

If they are not out and about...maybe hiding and maybe less than 8 months.
 
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