My dead arowana

For three days. Carbon is a part of the filer cartridge.
Ammonia in the tank was less than .25mg/l
 
The guy at my lps mentioned that Aro's have been known to choke on food. Who knows....I agree with those that think it might have been the ammonia.

Thanks for all the ideas!
 
Oxygen

Hey, Can I ask you how much aeration you had in the tank? Are there airstones in addition to the filters? I am almost positive that the water movement was not a factor, but if it was a silver arowana or australian than it could very well have been from over-oxygenated water. There are a lot of cases of such deaths, and I have witnessed a few myself. Ph=8 should be alright, not enough to kill the fish, and it doesnt sound like the ammonia was at a critical level, at least not high enough to be sure. On the choking issue, what were you feeding it? 4-5 inches shouldnt have had a problem with feeders . Seriously, I would consider the oxygen hypothesis before anything else.
 
i have about 30 inches of airstone along the back
I have never heard of too much oxygen. I didnt realize these guys were so darn finicky...
I am upgrading to a 175 to 200 gallon when I get my income tax refund. Ill wait until that is est. then think long and hard about another aro.
I dont liike a fish/tank that is like a prima dona. I wouldnt last 5 seconds with a reef tank.
The tank has hearty full grown sa cichlids in it now. They are as low maint as it comes. Just throw em some food and do monthly maint.


Here is a pic of him/her
details.php
 
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