Fiji Reef Fish includes all of the species likely to be encountered by scuba divers and snorkelers exploring Fiji's reefs. It includes 866 species from 92 families, with over 1,200 photos. Each form is shown of fishes where males and females, initial phase and terminal phase look different. Fishes are shown in taxonomic order, the way naturalists and scientists expect them to be listed. When a species is likely to be confused with another, the differences are pointed out. All photos are of unrestrained live wild fish in their natural habitats.
Mark Rosenstein has been studying reef fish as a hobby for twenty five years, first in aquariums, then scuba diving in their native habitats. He started photographing fish for FINS, one of the first websites about aquariums, in 1994. A bit obsessive about his hobbies, this has progressed to multiple dive trips a year to amass a photo library of over 100,000 images.