Cleaner shrimp

On this wettest and windiest of days, I'm delighted to be able to blip a genuine tropical invertebrate that I found in Stirling! After work, we went to our local branch of Dobbie's garden centre, which has an excellent tropical aquarium shop. This is a cleaner shrimp (I think, Lysmata amboinensis) and I couldn't resist the amazing colours in this image - the bright red on the carapace, along with the white antennae against the oceanic blue of the aquarium wall. Cleaner shrimps are important on tropical coral reefs, where they will set up on a visible area of a reef where it might be expected that they would be eaten by one of the myriads of predatory fish on the reef. But they perform such a useful function, cleaning parasites from the outsides, gills, etc of a wide range of fish species that, amazingly, they aren't eaten, but effectively live in symbiosis with a large part of the reef fish community. And they are little stunners, aren't they?