iphone, ipad (172mb)    £0.69 / $0.99 offer until 31 Jan, then reverts to $9.99          rollingharbour rating *****

This is app is so good, and such an utter bargain until 31 Jan 2012, that I have awarded it the rh logo position at the top of the page. Praise indeed. Audubon guides are legendary, of course. The excellent Audubon bird app has already been reviewed and also given a rare 5*- see BIRD APP on the BOOKS ETC drop-down menu. Now here are the Caribbean Fishes, in all their glory. First, a clip shot of the download page – click on it to enlarge and avoid eye-strain

This is a very well designed app, a comprehensive search and identification tool with a myriad of features. It’s fine for an iPhone, but I guess it would really come into its own on an iPad. Whatever that is. Here’s a brief overview of the contents

SEARCH OPTIONS:  by shape (dividing size into 5 categories, from giant to tiny); family (alphabetical list of species); name (alphabetical list with useful thumbnails to assist – and cleverly, the ability to search by first name ‘Sergeant’ or last name ‘Major’), or advanced search (size / shape; habitat; regions; colour)

REFERENCE sections on biology; fish-watching tips; marine habitats; biogeography; conservation; fish taxonomy; dangerous fishes; large glossary

OTHER FEATURES include the facility for having a (free) account, enabling a ‘My Content’ facility; Journal; and GPS

Crits? Very few at first glance. The odd typo. My inital search for bonefish by size (over-optimistic, of course) led me to the larger ladyfish, but a search by name took me straight to it. The most significant confusions may arise from the present ‘single image’ ID format. For example, if you look for the uncomely  greeny-blue adult male stoplight parrotfish, you may be surprised to find the prettier black, white & red female pictured. Similarly, you won’t find juveniles, such as the small blue-with-yellow-spots yellowtail damselfish. But these are small points in an app with such a large scope. Anyway, who knows what upgrades will follow?

Overall for £0.69 / $0.99 a complete steal for New Year