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Re: [APD] moenkhausia sanctaefilomenae

ryan_whyte at utoronto.ca wrote:
> I have a heavily planted EI tank, 65 gal, running hot these in my sweltering 
> apartment at around 82 degrees. DIY CO2, pH 6.8, medium-hard water. Around 40 
> assorted barbs and tetras. All of the fish doing very well, except for the 6 
> Moenkhausia sanctaefilomenae constantly gasping/gill clamping. No other fish 
> exhibits this behavior, and the spectacular rate of plant growth tells me that 
> the water should be pretty well oxygenated (I don't add CO2 add night).

Estimating oxygen levels by plant growth only tells you that the water 
is likely saturated towards the latter half of the day, and that only if 
you are getting pearling. Keep in mind that the oxygen requirements of a 
fish increase as temperature increases, and levels of dissolves oxygen 
likewise decrease. Each species will have a different intersection of 
the two requirements where requirements exceed the environment's ability 
to supply it. That being said, I do not know of any special oxygen 
requirements of Red-Eye Tetras, and I believe they encounter such 
temperatures in the wild anyway.

Jerry Baker
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