125 gallon with 45 gallon sump. Lot's of live rock and two inch sand bed. Temperature would be kept at 72 - 74 range. Corals would be sps, mainly deepwater acroporas.
centre piece would be chaetodon declivis (deepwater species) 3x
I have kept and love chaetodon declivis but I have never heard that they require a dither fish. My experience is they are out and about without issue, but I kept one in a 350 gallon mixed reef with acropora and montipora
I have read, that they like the precense of dither fish, so have been thinking of adding zoramia leptacantha 30x or pseudanthia parvirostris (deepwater species) / nemathias carberryi 10x (1 male, 9 female).
I have kept nemathias carberryi but you should know they do best with multiple feedings per day. I am not a big fan of cardinal fish except apogon parvulus as the remainder tend to pair off and are more active at night.
Are these really considered as a dither fish? Suggestions?
Valenciannea puellaris (for keeping the sandbed clean not necessary , though is this necessary?) or opistognathus rosenblatti. needs cooler temperature (the low end of your range), peaceful tank mates, and a deeper sand bed mixed with some rock rubble.
Elacatinus oceanops, for parasite eating. They don't really eat parasites. Some fish enjoy being cleaned, however.
CUC:
Lysmata amboinensis
hermit crabs (have lot's of empty shells of different sizes)
snails
strombus spp.
Any other suggestions for stocking? ��