I thought you can sex flame angels by the shape of the fins and the number of bars - or at least it was easier to ID male / female.
Prior to seeing the picture I posted earlier (saw it just last week! ) the general advice I remember reading for the past 5 years is they are like banggai cardinals, too hard to tell apart.
That picture has me hoping for better results if I eventually get crazy enough to try a second flame angel in my own 75 gallon tank. [emoji17]
So far I'm getting away with copperband 2" (5 months), yellow tang 1.75" (2 weeks, but wants to be a jerk), blue hippo tang 7/8" (2 weeks, but fattening up nicely), flame angel 2.5", 2 ocellaris clownfish, 2 banggai cardinals, tiny springeri damsel, 1.5" six line( would ditch that in a heart beat for a flasher / fairy combination) and flame hawkfish 2.25" and 4 neon cleaner gobies.
Longnose hawkfish past away after 5 years. It got along with the flame hawkfish (they mostly avoided each other, Longnose was slightly dominant).
Wanting to wait for a pair of Longnose hawkfish to try again. Getting the flame hawkfish and longnose hawkfish to get along is hit or miss.
Holding out for a pair before even considering trying it.
Better half likes the Longnose best.
Had the original long nose hawkfish paired up years ago, but lost the mate in a tank crash.
The flame hawkfish was added a year later.