(1999) found that less than 5 percent of California red-legged frog tadpoles survived to metamorphosis when raised with bullfrog tadpoles (initially, ponds held 720 red-legged frog tadpoles and 50 bullfrog tadpoles;
(ponds; held; 720 red-legged frog tadpoles and 50 bullfrog tadpoles; T:initially)
ponds
held
720 red-legged frog tadpoles and 50 bullfrog tadpoles T:initially