If you don't live somewhere with scorpions, perhaps tree frogs?
And because inquiring minds want to know.....
This is from a recent PNAS article.
Carlos Taboada, Andrés E. Brunetti, Federico N. Pedron, Fausto Carnevale Neto, Darío A. Estrin, Sara E. Bari, Lucía B. Chemes, Norberto Peporine Lopes, María G. Lagorio, and Julián Faivovich. Naturally occurring fluorescence in frogs, PNAS 2017 ; published ahead of print March 13, 2017
The photos shown on TheScientist website are form Fig 1B which are described in the figure legend as, "... taken with a band-pass excitation filter attached to the flash and a long-pass emission filter (516 nm) attached to the lens."
The article further states ".... spectral profiles presented excitation maxima of 390−430 nm and emission maxima at 450−470 nm (blue), with a shoulder at 505−515 nm (green) giving an overall cyan coloration ...."
Edited by JCDowdy, 16 March 2017 - 22:50.