Fish Identifier by Picture is a free iPhone app developed by ElevenThirteen LLC. With this app, you can instantly identify different marine species just by taking a picture. The app covers worldwide regions, which are split into 31 regions that you can filter. It's not just limited to fish - you can identify all marine species.

The app also offers an Education section that contains valuable bonus material, including information on anatomy and families. With approximately 10,000 species, Fish Identifier by Picture has one of the highest species totals available.

The app also offers a PRO account subscription option, with durations of 1 week, 1 month, and one year. The subscription automatically renews unless auto-renew is turned off at least 24 hours before the end of the current period. Payment will be charged to the iTunes Account at confirmation of purchase.

Please note that any unused portion of a free trial period, if offered, will be forfeited when the user purchases a subscription to that publication.