search google and this website:

butterflyfish 
INDO-PACIFIC Coral Reef

The beautiful and diverse butterflyfish...

Family Chaetodontidae, 'Butterflyfish'

Butterflyfish are medium sized fish that are extremely laterally compressed; that is, they have the shape of plate. They are usually dominated by black and yellow colours, but there are many variations. Butterflyfish are usually found in pairs.

This is my favourite group of fish! There are many species to identify, but all are distinct and relatively easy to identify...  

Forcipiger spp.

(Aitutaki, Fiji)

Forcipiger flavissimus, 'Long-nosed Butterflyfish'. There is another species called the 'Very Long-nosed Butterflyfish', which has a longer 'nose'. 

Chaetodon spp.

Chaetodon - Lepidochaetodon group - subgenus Exornator

(Aitutaki, Fiji)

Chaetodon citrinellus, 'Speckled Butterflyfish'.

(Niue)

Chaetodon quadrimaculatus, 'Four-spot Butterflyfish'. Found on tropical coral reefs in central and northern Pacific.

Chaetodon - Lepidochaetodon  group - Subgenus Citharoedus

(Niue)

Chaetodon reticulatus, 'Reticulated Butterflyfish'.

Chaetodon - Megaprotodon group - Subgenus Discochaetodon

(Misool, Indonesia)

Chaetodon octofasciatus, 'Eightband Butterflyfish'.

Chaetodon - Megaprotodon group - Subgenus Corallochaetodon

(Miyako Island, Japan)

Chaetodon lunulatus, 'Oval/Pacific Redfin Butterflyfish'.

Chaetodon - Megaprotodon group - Subgenus Tetrachaetodon

(Pink Beach, Komodo, Indonesia)

Chaetodon bennetti, 'Eclipse/Blue-lashed Butterflyfish'.

Chaetodon - Rabdophorus group

(Alphonsa, Seychelles)

Chaetodon xanthocephalus, 'Yellow-headed Butterflyfish'.

(Miyako, Japan)

Chaetodon rafflesii, 'Lattice Butterflyfish'. Looks like a pineapple!

Updates
Well it looks like my first trip after the virus will be the Great Barrier Reef (where I started!) with Coral Expeditions.....I hope. If you can't go travelling until everything settles down, then until then, here I am doing online guided walks for Noble Caledonia and online lectures for Silversea.