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Extra info for Britannica Illustrated Science Library Fish And Amphibians
Without legs Tailless BLADDER ADAPTATIONS 1 Amphibian feet vary according to habitat. SWIMMING The membrane that extends to the tip of the fingers helps in swimming. 3 JUMPING The legs are muscular and well developed for jumping. DISKS Round adhesive pad on their fingertips help them grip and climb. Legs 4 SHOVELS The bulges are useful for digging. Frogs and toads have four fingers on each front leg and five on each hind leg. Water frogs have webbed feet; tree frogs have adhesive disks on the tips of their fingers to hold on to vertical surfaces; and burrowing frogs have callous protuberances called tubercules on their hind legs, which they use for digging.
Total number of teeth Its two-colored body lacks scales. BLUE RIBBON EEL Rhinomuraena quaesita inhabits the waters of the Indian and Pacific oceans and feeds on small fish. Females have a yellow dorsal fin. FINLESS Its elongated, muscular body lacks pectoral and pelvic fins. Its long dorsal and anal fins, however, end in a short tail fin. 6 kg) CONGER Conger conger There are 100 species of congers. This one is dark gray. 7 m) Weight 53 pounds (24 kg) 31 inches (80 cm) SNOWFLAKE MORAY Echidna nebulosa It grows rather slowly and can take up to two years to reach adult size.
Tadpole with legs. When the color is visible, the poison is deadly. FINGERS WITH SUCKER PADS 2 GLANDS function the same as in frogs; they have glands that secrete poison on the skin and cover it. STRONG HIND LEGS EYE GLANDS On both sides of the head and behind the eyes MOIST SKIN 3 Adult. The color is bright and distinct. TOXIC TADPOLES Poison dart frogs, or poison arrow frogs, carry their tadpoles, sometimes one by one, to small isolated ponds (sometimes in tree hollows), where they raise them.
Britannica Illustrated Science Library Fish And Amphibians by Inc. Encyclopaedia Britannica