Ray's need depth and width not so much height, but I definitly don't think a 150 or a 180 will work for a ray........ if your Jaguar is the one in your avatar, which looks male, you will have problems with getting either a Festae (true red terror) or a Dovii, especially the Dovii. But if you get females of either a Festae or Dovii to be tankmates, then it might work.