Hi everyone Ordy here.
Beautiful tank. You've done an excellent job with the rock work. How much rock did you use?
Just mimicking what the previous poster said about that sailfin; major Mike Tyson issues. I've read tons of info on those tangs and everything I've read say's that minimum tank size for one is 100 gallons gallon.
I had a hippo in a 55gallon that lived for 8 years. Susceptible to hole in the head disease. Thats how mine died.
I have a 46 gallon that I drilled and constructed a hood for that I never used. Ran out of time to set it up. Nice to see what it can look like with the right husbandry. You done good...