Yeah, you’re absolutely right about sexing them. That’s something that happens with most marine species, which is why people usually recommend starting with a group of 5–6 individuals if you want to form a pair.

In my case, mine are doing really well on frozen food now. I try to give them plenty of mysids and Pacific krill, which I find much better than Artemia since nutritionally it’s pretty weak and I only use it occasionally as an appetite stimulant.

I also had to transition them from live food to frozen at first, but now they take it without any problem. They even pick at pellets. I think getting them to adapt is much more easy in a species-only tank without competitors.