sturgeon
['coral reef', 'killer whale, killer, orca, grampus, sea wolf, Orcinus orca', 'horned viper, cerastes, sand viper, horned asp, Cerastes cornutus', 'scabbard', 'Gila monster, Heloderma suspectum', 'goldfish, Carassius auratus', 'bannister, banister, balustrade, balusters, handrail']