Banksy confirms piranhas are his seventh animal artwork in London

The shoal of fish on a police box follows works depicting a goat, elephants, monkeys, a wolf, pelicans and a cat

A central London glass police box has been made to look like a tank of piranhas, in the seventh in series of works by the graffiti artist Banksy.

The elusive artist claimed the work as his own by featuring it on his Instagram account in a post at 1pm on Sunday.