Cichlid Charging All Other Fish.

electric yellow

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Dec 27, 2007
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Eastern Victoria, Australia
*cross posted*

I really need some advice. The aggression being shown by one of my johannis is ridiculous. Im so terrified hes going to kill my other fish. I have an assorted Cichlid tank and they have all been together for over a year now (i know people dont lime mixing african with sth americans etc but its worked fine for me for ages) but he is so angry that he is ramming my convicts and all of the other cichlids are hiding in one corner. He literally charges across the tank at them! crazy.gif

They are in a 3ft bow front tank which is quite deep and ther eis adequate spacing. The stocking is this:
1x electric yellow 2yrs old
1x electric yellow 1yr old
2x electric blue female 1yr old
2x johannis 2yrs old (im assuming 1male 1 female because they are paired)
4x convicts
2x yellow tail acies

I really dont know what to do with him because he is so angry. He has never been like this before. I am doing a water change today and splitting the ship wreck in half so one side is down each half of the tank and putting plants in the middle as a barrier but i dont know what else to do!

Is it a phase and will he calm down? Hes a large fish. Id say about 10cms. My other johanni seems oblivious to whats going. Shes just swimming around on her own.

This is the tank:
DSC01170.jpg

It doesnt look like that now decor wise...we added lots more plants etc. It isnt to small because we dont plan on adding more fish and havent added newbies for sometime now.
 
Is it a territory thing? Try rearranging the plants / rocks to break down the territories and make them find new ones
 

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