Keepers are concerned about 'No. 1'
(Newser) -
A giant isopod at Japan's Toba Aquarium apparently enjoyed the horse mackerel he was fed on Jan. 2, 2009—he downed it in just five minutes and hasn't taken another bite since. Feb. 10 marked 1,500 days since the creature, known simply as No. 1, ingested any...