Blowfish (Fragments)
From Tardis Wiki, the free Doctor Who reference
A Blowfish appeared in Cardiff in 1899. He was captured by Jack Harkness, who had been sent by Torchwood Three. He was brought back to the Hub, but since there was no way to return him home, he was shot dead by Torchwood agent Alice Guppy, to the objection of Harkness. (TV: Fragments)