If you're keen to see frogfish, there are a lot in Ambon (major understatement)!
Phil, one of the keen-eyed divers on the Ambon Night Safari trip, counted 18 (or was it 20?) different frogfish over the course of eight days of diving, including this pretty reddish one:
The waters around Ambon are chocked full of frogfish!
Among other frogfish highlights I can recall were several pitch-black frogfish, a few yellow ones, a white one, several mottled-puke colour individuals, and a lovely lavender fish.
Unfortunately, we didn't see the Maluku frogfish, but that's not surprising given how rare sightings of that enigmatic piscine are.