Striped Catfish is such a loose term and can be anything from a breed of Cory,to a Striped Raphael Catfish to a specific member of the Synodontis family. The best thing to do is really research as much as you can until you think you have found one that looks familiar to you,and then read all about them. There are so many species of catfish,and they all have specific needs.Some may stay small where others can grow huge----some may be too shy to keep with goldfish,or far too aggressive, some may prefer calmer more tropical temps,etc.

What size tank are we talking here,with how many goldies?