Impressive fish.
The X triggers are slow growers, but you might get sick of feeding them.  If they start to get even a little bit skinny, they will disappear and die one day.  Many feedings with many different types of food are good.  They love some squid, mussels, octopus.  The last Goldenback that I had could eat a whole sheet of the 6x6 nori in about 10-15 seconds while keeping all the other fish away.
The last Crosshatch pair that I had took me 4-5 months until RT found a small male, but they were about 3.75-4 inches (really cute) and grew to 6 over a 3-4 years, but I put them in the 5000 gallon children's hospital tank when I moved here.
These are some of my favorite fish.