What we forget sometimes is that the pets we have and take care of are ANIMALS first, then pets.In the wild, these "animals" would eat whatever they can find, be it spider, worms, birds, etc. We can't really compare their immune system to a human being because there are differences in immunities. Some build immunities to venom. If it was my fish..and cash is scarce, then I would find food for it in the wild, in this case, spiders are plentiful. Any type of bug should be safe for food for the aro. They do have instinct not to take in food that is not palatable. Notice they spit some food out sometimes, that's why. Give it a try, let us know, but do this at your own risk, in that, I don't have access to the particular spider you have. Orb weaver spiders here in the US are "wimps", with the exception of the black widow, and the brown recluse, which are not orb weavers. there is my .02 cents, hope it's worth someting.