Here you go! I think this is the full list:
Hawaiian Sergeant Major (Abudefduf abdominalis)
Saddleback Butterflyfish (Chaetodon ephippium)
Ornate Butterflyfish (Chaetodon ornatissimus)
Spotband Butterflyfish (Chaetodon punctatofasciatus)
Fourspot Butterflyfish (Chaetodon quadrimaculatus)
Bluecheek Butterflyfish (Chaetodon semilarvatus)
Blackfin Butterflyfish (Chelmon muelleri)
Yellow Chromis (Chromis analis)
Tomini Tang (Ctenochaetus tominiensis)
Green Coris Wrasse (Halichoeres chloropterus)
Golden Wrasse (Halichoeres chrysus)
Black Pyramid Butterflyfish (Hemitaurichthys zoster)
Jewel Damselfish (Microspathodon chrysurus) based on juvenile
Whitemargin Surgeonfish (Naso annulatus)
Magenta Dottyback (Pictichromis porphyrea)
Jaguar Dottyback (Pseudochromis moorei)
Springer's Dottyback (Pseudochromis springeri)

does someone have a list of all the fish in this pack?

The Hawaiian Sergeant is somehow in the game yet has no textures. Was that a glitch?