AquaNotes is a web portal with fish biodiversity survey data. About 1500 species from the East Indies are included, most with multiple images to show variation due to age, sex, behavior, or geographic location.
SCUBA divers can use the site to see images for species known to occur at their dive location. In time, AquaNotes will develop to help with fish identification and teach about their distribution, behavior, habitat requirements and more.

AquaNotes is based on fish biodiversity survey data collected while SCUBA diving. It started with a 3-month survey in Dauin (Philippines) funded by the PADI AWARE Foundation. After that I gave up my academic career to explore fish biodiversity as a full-time retirement project.
This link gives information on fish survey goals and methods.

AquaNotes uses photographs as proof of identification and to compare appearance across regions, life stages, etc. Synchronization of camera and dive computer also allows depth, temperature and time of day to be recorded.
This section discusses equipment, techniques, and other information about using underwater photography as a documentation tool.