This is one from the Barron's series, and follows the usual format. The first half of the book introduces the family of fish- which has a wide variety of forms, so that was a bit confusing. Then there is the obligatory aquarium setup and fish care information. The second half of the book is a listing of many many species, with nice pictures and little descriptions. Most just have scientific names listed, not the familiar terms I know. Some were new or undescribed species when the book was written, so they don't even have a common name. Maybe they have one now, I don't know. There are a lot of attractive species in here, but I've realized I am not really interested in these kinds of fish. Although I might get a few for my tank they probably won't be the featured species. Thus about halfway through the book I just didn't want to read it anymore. The first part all felt redundant to me, so I was bored and skimming. The second half might have been more interesting, but it simply wasn't. I pretty much just looked at the pictures.