ehh.. I find that the american Stingray books are all fairly vague and generalized information, all stuff you could probably acquire from the internet.. It is nice to have a nice hardback book to let people borrow.. but nothing beats the german Aqualog (full version) as it breaks down in detail the identification characteristics of each species, as well as collection zones, etc..
All the other books have the same info, but just not species specific details like that..
All the other books have the same info, but just not species specific details like that..