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Old 12/18/2017, 10:01 PM   #3042
Michael Hoaster
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Join Date: Feb 2004
Location: Boulder, CO
Posts: 3,776
No, sam.basye, I haven't been able to ID the sea hares. I have looked to no avail. I do know that most nudibranchs are very specialized in their choice of food. Many only eat one thing. Not knowing if it specializes in eating caulerpa racemosa or all caulerpas, I'd call it a Caulerpa Sea Hare. It doesn't even eat ulva.

I'm not sure how big they get, McPuff, as I caught the biggest ones first, to prevent more reproduction, and they were easier to spot. The biggest one I saw was around an inch and a half. I suspect they get bigger.

I would guess mine reproduced (and survived) because they had a plentiful source of food. If I could have ID-ed them, I may have been able to find their natural predators. No such luck, so I get to play that role.

It is pretty cool when something lays eggs in your tank, but thousands of anything, in the confines of an aquarium, is likely to throw off the balance of the ecosystem, or at least destroy a plant you'd like to keep. So, like the Atlantic Blue Tang I had before, these guys have to go. I could just let them exhaust their food supply and crash, but I was hoping to hold onto a fragment or two of the caulerpa to grow it back. We'll see how it goes.

As many naturalists and environmentalists have suggested, we should set aside our arrogance,
our desire to conquer and control everything, and walk hand in hand with Mother Nature. -Walter Adey

Current Tank Info: 180g Seagrass Sandbar Lagoon
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