seanathon;2991924; said:
you dont ever want to feed spiny eels feeders because they are so prone to bacterial infections. it is probably bad to even put them in there for the oscar. i wouldn't do it anyway
So, yes, this is getting off topic, but I think it is important to note. Yes, spiny eels can be prone to infections, so I don't like to add anything that hasn't been quarantined such as feeders. However, I will note that I keep and have raised my fire eels with several (but carefully selected) species of well behaved plecos, messy catfish, discus, clown loaches, rainbow fish, iridescent sharks, tin foils, and the list goes on. I just keep the water quality good, and these guys hold their own well. As long as the Oscar isn't constantly picking on the eel, there is no reason for them not to be able to be housed together. In fact, my eels practically run the 180 gallon tank.
If you do run into infection, they are easily treated. I just inject their nightcrawlers with one of the Gel Tek medications. They have everything from broad spectrum antibiotics to medication for internal parasites. You can easily dose your fish without trashing the biological filtration in the tank.
So, basically, if your eel is happy, healthy, and has plenty of room to grow, I can't see any reason to not keep them with other species. Obviously, the tankmates will depend dramatically on the individual personalities.
