Aaron,
I wonder if you would have better luck with them eating the avocado if you split a whole one and put a big piece in..I mean no ones prepping it for discus in the wild.
and avocado is so soft they should be able to "graze it".
Dan, Freeze dried is pretty much as nutritious as fresh. Very little is lost.
I wonder if we will one day learn that the fruit being eaten in the wilds isn't really what they are "eating"..... Is it the fruit per se that they are eating in the wild or perhaps its whats eating the fruit as it decays that they are after ( and of course they would be eating the fruit too on a macro level).I'm not saying that they haven't been found to eat fruit in the wild , but I wonder if its more than the fruit they are eating... I say this because wild discus have been shown to eat Algal Periphyton... and I can see some basic similarities between that and "decomposing" fruit.
okay enough speculation on my part...Just thought I'd mention something I was thinking about but have no proof of. Food for thought, if you will.
HTh,
al