I personally wouldn't use a feather fin. Learned out the hard way that they won't keep those nice luxurious fins for very long in any sort of predator tank. Mine currently looks like he went thru WW3 already, least to say he doesn't live up to the name anymore.Magnus_Bane could probably offer better insight than me.
Try synnodontis peticola or a striped Raphael cat instead, they are a bit tankier the euriptus is and the petricola is a bit flightier while the raphael tends to hide allot more and is heavily armoured.