I've owned two Scomberoids, and one Tat and trust me, they were worth every second of keeping them but first you need to learn the basics. They need a current very similar to the white water rivers of Venezuela, otherwise they become very prone to disease and will sit in one spot all day. All three of my Payara died because I ignored the fact that they need a current because I was too lazy. They also need a very wide tank because these fish are notoriously claustrophobic and will smack the sides of the tank over and over till they kill themselves. The width of the tank should be at least double their length to provide room for them. You also need to get them onto Frozen or Prepared foods as fast as you can because feeding live their whole life is not only risky because of disease, but it can become very expensive throughout time. Another key tip is to not keep "Nippy" fish with them because fish such as Tiger Barbs and other nipping fish like Convicts will nip them to death. Those are the main keys to maintaining a healthy Payara and I hope I helped you on your way to keeping a Payara! Trust me, if you abide by those tips you will be very satisfied with them.