Mauritius100
some fish swim upside down
Another fairly unusual underwater photo.
People with aquariums worry if their fish swim upside down but it seems to be natural for some fish to do this in certain situations. Here a juvenile Masked bannerfish, Heniochus monoceros ( the black yellow and white one) is swimming upside down in the company of some Crown squirrelfish, Sargocentron diadema ( red and white stripes and bad tempered looking ) and a band of young Striped eel catfish Plotosus lineatus ( strped white and dark grey ones at the back).
Masked bannerfish can also swim the right way up and usually do so when swimming in the open. Another fish that also swims upside down is the forceps butterfly fish ... so far I don't have as good a photo of one doing it.
Swimming upside down under a rock or coral presumably makes it harder for a predator to catch you - it certainly made it more difficult to get the photo.
some fish swim upside down
Another fairly unusual underwater photo.
People with aquariums worry if their fish swim upside down but it seems to be natural for some fish to do this in certain situations. Here a juvenile Masked bannerfish, Heniochus monoceros ( the black yellow and white one) is swimming upside down in the company of some Crown squirrelfish, Sargocentron diadema ( red and white stripes and bad tempered looking ) and a band of young Striped eel catfish Plotosus lineatus ( strped white and dark grey ones at the back).
Masked bannerfish can also swim the right way up and usually do so when swimming in the open. Another fish that also swims upside down is the forceps butterfly fish ... so far I don't have as good a photo of one doing it.
Swimming upside down under a rock or coral presumably makes it harder for a predator to catch you - it certainly made it more difficult to get the photo.