Gr 2-5-With graphics designed to look like file folders, these volumes present fascinating fish facts in concise but detailed chapters that include physical descriptions, diets, habitats, and life cycles. Colorful, action-filled photos and captions that resemble "Post-It" notes clarify and add additional information, as do charts listing data about the featured fish or their "friends." Maps would have been helpful (what third grader knows where the Indo-Pacific is?) and sometimes the texts lack clarity. For example, in Lionfish, readers learn first that the creature, "isn't a fast swimmer," but a later page says, "Lionfish are very quick." Nonetheless, the series is well suited for reports, and its fearsome covers and chatty tone gives it lots of browser appeal.