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  1. #1

    Join Date
    Aug 2006
    Northern Virginia

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    Default Peacock cichlids

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    The peacock cichlids of Lake Malawi are arguably the most colorful fish in the world, or at least in freshwater. They have many benefits to them over other similar options for tank inhabitants.

    Peacock cichlid is the common name of the cichlids in the genus Aulonocara. They are numerous. Also commonly called peacocks are any hybrids within or including these species. As with 10% of the world's freshwater fish, they are endemic to Lake Malawi in the Great Rift Valley in East Africa. They share the lake with two other main groups of cichlids, the mbunas and the open water piscivores. However, they do not interact much with either because of their lifestyle. The peacocks stay down deep (hence their enlarged eyes) while the others stay up in the shallower depths of the lake.

    Peacocks' natural diet is high in invertebrates. Their lateral line system is highly developed in their face and head. They sit motionless just above the sandy substrate. With this advanced lateral line system they wait to feel the slightest vibration of anything under the surface of the sand. Once they feel it they quickly lunge their face and head into the substrate, coming up with a mouthful of sand, food item inside. This is very advaced for fish. Dolphins have a similar hunting method, except they actively produce sound in search of a food item, while the peacocks simply wait for it to move, giving away its position.

    As with most of the cichlids in Lake Malawi, they are all mouthbrooders. As with mbunas, some males have eggs spots on the anal fin. These function to trick the female into going for the eggs spots thinking they are eggs. This allows the male to release sperm in to her mouth, helping to ensure all the eggs are fertilized. The female will hold the eggs in her mouth until they are about a half an inch in length, at which point she will release them and they are on their own. As with mbunas, in an aquarium setup there should either be all males or at least two females per male. The males are extremely brilliantly colored, while the females are simply a drab gray, frequently with a little coloration such as a thin orange line along the edge of the dorsal fin.

    Peacocks are much less aggressive than mbunas. Even with large males in the tank, it is possible to add juveniles without worry assuming there are enough hiding areas.

    The most natural setup for peacocks would be a spacious tank with multiple rock formations. A sand substrate is ideal. The rock formations should be spaced out enough to give an obvious visual barrier of sand between each rock pile. Each rock pile will become a single territory for one male. The females may roam freely from one territory to another, but any males will be enthusiastically deterred. In a mixed sex tank there is chasing and aggression, but nothing compared to mbunas. They will simply chase eachother out of their territories. Very little damage to any individual usually occurs.

    Lake Malawi is naturally hard, alkaline, and has a unique chemical composition. Because of this peacocks will do their absolute best if kept in conditions that replicate this as best as possible. The pH should be maintained at about 8.2. If the water does not do this naturally a buffer should be used, as opposed to a directional pH adjuster. Buffers will bring the pH from either direction and hold it there. Directional buffers will bring the pH up or down, but do little to keep it there. This causes a yo-yo or rollercoaster pH. This is worse for the fish than a pH that is not ideal but is stable. To replicate the unique chemical composition there are special lake salts available. These provide the right elements, in the right proportions, in the right dosing for the lake. This is not just aquarium salt, nor marine salt. The composition is different. The dosing is specific to the lake, so the directions may provide one dose for Lake Malawi, one for Lake Tanganyika, etc. By providing the proper pH and special lake salts you will provide the best water parameters for these fish to truly do their best and thive in.

    Tankmates for peacocks need to be chosen very carefully. A prerequisite to any combination is water parameters. Any fish to go in to a peacock tank need to have compatible water parameter ranges. In addition to this the other fish should not be too aggressive for the peacocks, nor passive enough to be picked on by the peacocks. Frequently cichlids will pay attention to other cichlids, yet effectively ignore non-cichlids. I do not suggest using any type of dither fish to keep the peacocks' attention off of eachother. Fish deserve to thrive, not be the focus of attention for aggressive cichlids. There are options, but almost all need to be done under the supervision of a fishkeeper good at detecting aggression issues, even when they are vaguely displayed. Some options to be considered are: bichirs (Polypterus spp.), Synodontis spp., and other hardwater species fitting the above requirements. Many people will mix the different types of Malawian cichlids. I have found that although sometimes they can do 'okay' together, they do better by themselves. The other types are simply too aggressive for peacocks to truly settle in and thrive. Even when they are mixed, the keeper needs to be capable of removing individuals as issues arise. If there are no spare tanks around or no space in the other tanks being kept, then the fish has to go back to the LFS.

    To see pictures of my Peacocks, just check out my PhotoBucket page.
    Aquarist since 1995
    Biologist and Published Author in Multiple Aquarium Magazines
    Owner: Aquarium Maintenance Company
    Advanced Aquarium Concepts: Articles about many aspects of aquarium care.

  2. #2

    Join Date
    Jan 2008

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    0 Not allowed!
    nice post fishguy you gonna try and take out dave lol.....
    75 Gallon South Cichlid: Tiger Oscar and Jack Dempsey

    55 Gallon GT Tank: 1 Male GT and 8 Giant Danio

    20 Gallon Long: Waiting for eco-complete planted red substrate that has been delayed 2 weeks due to weather.

    "Don't buy fish at Wal-Mart then go to your local fish store for help when they die. Goto your local fish store first and get educated. It will save you money and many many fishes lives."

  3. #3

    Join Date
    Sep 2008
    Ontario, Canada

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    a well written thred, and a very informative one as well!! Thanks. would agree with you that peacocks are strickingly beautiful in colourations and temperment. They are definately way more laid back than my mbuna tank that's for sure!!

    I really like how their faces look like they are always smiling! such a happy 'looking' fish!!

    1 55gal African Chiclid (coming soon...)
    1 20gal African Chiclid Juvenile
    1 5gal African Chiclid Fry
    2 5gal Betas

  4. #4

    Join Date
    Aug 2008
    Drive North, First igloo on right

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    Thanks Fishguy! That was a good read.
    Lotsa useful information.It should make for a good Sticky!
    Ray Your Freindly Neighborhood,Fully Mod-ified, Self-appointed Pic Hound!! Need pics!!!
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  5. #5

    Join Date
    Jul 2010
    Ottawa, Ontario

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    Very informative!! The first Chiclids i ever saw were very dull in colour. but i googled the peacock Chiclids and fell in love with the Rubin Reds. i think i might have an idea for my next tank....
    Why does Sea World have a seafood restaurant?? I'm halfway through my fish burger and I realize, Oh my God....I could be eating a slow learner!

  6. #6

    Join Date
    Jul 2010
    Neyoo Zulland

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    Default nice write-up

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    I've just setup a new tank - you can see my newbie post at

    Have an opportunity to buy "3 x Young Sunshine Peacocks (3.25cm)."
    The seller is using a New Zealand online auction website and his feedback is good (2043 sales with over 99% positive feedback) so I figure the risk of buying online should be pretty low in this case.

    These fish seem pretty peaceful but I've heard that some are best kept in mated pairs, or away from other males, etc., ...

    I asked the seller what sexes these fish are and have been told they're "unsexable" - does that seem right? I hadn't heard of that before but that probably just show's my newbieness ;o)

    Appreciate your help. I tried the search and didn't come up with anything so apologies if I've asked a question that's already been covered before.

    Thanks in advance for all advice ;o)

  7. #7

    Join Date
    Jan 2012

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    Thank You for a Great article, very informative,

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