Gotcha! That looks like the ones that Cairns Marine use in Australia too. So some history... AI used to have this nearly magical proprietary blue LED diode. It was so nice, Ecotech bought AI, the ENTIRE COMPANY, so they could use that blue LED in Radion fixtures. The AI now don't have that LED diode anymore, but Radions still do. So I would wager from a spectrum perspective your fixture is similar, but Radion uses completely custom proprietary LED's that you cannot purchase anywhere. For some reason, I found that absolutely fascinating when I learned it, and can't help but share whenever the opportunity arises. That's a heck of an investment for one blue LED diode.