6 ft 125 gal w/ lots of caves question

[Seahorse8383]

I currently have a 6 inch jack dempsey and a 3 inch oscar in my 125 gallon. I have a fluval fx5 and an emperior bio wheel 400 running on this tank. My question is do I have room to add another fish. If so what are my options. I want to keep these fish into adulthood so I want the stock to work permanetly. Please advise. Thanks

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[Crazy mike]

There are various others but it's best to add all cichlids at the same or else the new one is at a serious disadvantage and may be killed or at the least beaten half to death. But convicts, salvini, Firemouth, green terror, acara, Texas or vieja are also options.

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[Seahorse8383]

You did say that before. I always have a hard time making wise decisions when buying more then one fish at a time.

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[duanes]

I agree with Crazy mike, any time you add a new fish to a tank with established residents, the new fish is at a distinct disadvantage, because territories are already set, and because most cichlids are territorial.
You can sometimes skirt this issue by rearranging the decor, and adding a bunch of new fish at once, confusing the tank enough to allow for a new hierarchy to become established.
And as they grow, lots of filtration or not, more and more water changes will be needed to keep up with waste production, other metabolism byproducts, biological oxygen demand, and build up of pheromones.

 

[Seahorse8383]

Pheromones? Really?

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[ascarbo27]

so what if you add 4 fish that have been together to a new tank

 

[adixon816]

so what if you add 4 fish that have been together to a new tank

There will likely be a period of setting up a new hierarchy that may not be the same as before.

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[Crazy mike]

There will likely be a period of setting up a new hierarchy that may not be the same as before.

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+1 when upgraded from 55 to 90 my hierarchy changed multiple times

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[duanes]

Water changes are not only done, to get rid if nitrate and detritus.

Pheromones? Really?

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[Mythic Figment]

Pheromones? Really?

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Fish have a variety of receptors on their "noses" that detect things ranging from sunlight photons to chemicals (pheromones would be included in this category) to low level electrical impulses.

As Duanes said, water changes can be used to reduce more than just negative water parameters.


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