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The family of fish (technically, the genus, not the family) that this beauty belongs to like to form harems. I have attributed this to them all being from the Red Sea area – you know they are Arabs and Arabs have harems! Ok, it is a stupid joke. But, really, they do form harems. My new fishy is from Israel, and this makes 3 fish from this region in my tank. I have been watching them carefully to see if they form a harem, but when I commented to my sister that it didn’?t look like they were, she asked “would you know what a fish harem looked like if you saw one?”. Hmmm, no. But they are getting along swimmingly. I was googling for information on harem formation and came across a scholarly article looking into the performance of labriform locomotion – swimming with the pectoral fins. If you have ever had the pleasure of looking at these fish in motion, the way they move is just as spectacular as they coloration. They seem to hover in place with the slightest movements of their fins. Or more scientifically:
We found significant differences in fin planform, fin kinematics and swimming performance between the two species in each comparison. The major trend in our data is that labriform swimmers with more elongate, wing-like fins and with a steeper (more dorso-ventral) stroke plane can achieve and maintain higher swimming speeds than can labriform swimmers with lower-aspect-ratio paddle-like fins and shallower stroke planes.