How many phyla can you count?

How many metazoan phyla can you spot in this shot from my reef tank? Chordata is missing on account of my damselfish being ridiculously skittish (probably because he shares his home with a mantis shrimp).

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7 Responses to “How many phyla can you count?”


  1. 1 Bob Kallal April 26, 2010 at 9:56 pm

    Certainly Echinodermata and Annelida.

  2. 2 Hai~Ren April 27, 2010 at 12:20 am

    Definitely Mollusca and Cnidaria as well.

  3. 3 Mike Bok April 27, 2010 at 11:37 am

    You guys are only missing the big one šŸ˜€

  4. 6 Wilf April 29, 2010 at 3:17 am

    Is that a hermit towards the left of the shot?

    Incidentally how do you keep that macro algaeunder control? I have some and it’s taking over my tank!

    • 7 Mike Bok April 29, 2010 at 9:08 am

      Nope, no hermits or any other decapods.

      The grape caulerpa on the left I just rip out periodically. The nasty hair algae I will need to suction and rip out and then cover with oyster shells until it dies. The brown pest anemone in the center needs to go as well.


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I have moved.
Arthropoda can now be found here.

Michael Bok is a graduate student studying the visual system of mantis shrimp.

Flickr Photos


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