Barron's Pet Handbooks look very much like Barron's Complete Pet Owner's Manuals, but the Handbooks are larger-more pages, more text, more color photos, and more detailed pet-care advice. Bettas, also known as Siamese fighting fish, are tropical Asian varieties having spectacular waving tails and fins. They're available in a wide range of colors. Here is expert guidance on the care of bettas, plus specific information on the different strains of betta and advice on segregating them from less pugnacious fish.