Barney, my Barnicle Blenny

This is Barney, looking at me expectantly waiting for his tea. He lives in his shell, only shooting out at meal times and is like having a tiny aquatic dog. He's very greedy and very watchful with his independently swivelling eyes and always on the lookout for a tit-bit. HE doesn't seem to be occupied with fishy concerns but more interested in TV and what's going on outside the tank. He cheers me up every time I look at him.