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Old 12-20-2015, 07:50 PM   #1
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New Mandarin dead in 12 hrs

Here is my new Mandarin just after drip acclimation and 12 hours later. Is this injury postmortem or cause of death? If the latter, what causes such an injury? Almost circular deep hole. No known predator hitchhikers in tank.

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Old 12-20-2015, 08:08 PM   #2
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most things won't eat mandarins because they have nasty tasting slime coat and secrete a thick mucus layer when they sleep. It could be bristle worms, but they would have done the damage post-mortem.
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Old 12-20-2015, 08:09 PM   #3
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from the number of posts I must assume your tank is new and recently cycled
mandarins are fragile fish they eat about 2000 pods a day , I am sure your tank couldn't produce that amount on a daily basis , they require a tank that is matured of a year or more and has a good population of pods ,
this will help give you a better understanding of mandarins.
...I'd like to buy a Mandarin! | Melev's Reef

the hole in his head could have been from a fish , crab , snail , or even a worm eating it
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Old 12-20-2015, 08:30 PM   #4
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My tank is over 18 months old, I am well aware of their dietary needs and they are more than met. I have a habit of thoroughly researching any addition to my tank.




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Old 12-20-2015, 08:31 PM   #5
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you know what they say when you assume things........
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Old 12-20-2015, 09:37 PM   #6
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Considering the mortality rate of Mandarins under the care of people who don't understand their dietary needs it's totally understandable for that to be a first place to check. If it died of malnourishment in 12 hours it wouldn't have been your fault at all and we all just want to help out someone who asks.

The wounds look to be from your CUC to me but I don't know what else you have in the tank that may have attacked it.


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Old 12-20-2015, 10:39 PM   #7
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Small hermits and snails. A coral banded is my prime suspect but it has not bothered any of the wrasses that sleep nearby and I've never seen it go after a single fish. So I think it's possible but unlikely.

I have a trap set to see what I find in the morning for any unwanted nocturnal hitchhikers.

I may have come off strong but I have rarely received friendly advice on here. One individual criticized that my anemone was suffering from poor water quality and stress because it split. In pristine water...that was 7 anemones ago!!! I have to give them away!
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Old 12-20-2015, 10:39 PM   #8
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The thing about mandarins is always about their highly specialized feeding needs. Even if someone can keep one fed in our tank, that doesn't mean that it wasn't starving when you bought it.
That is a hole from a clean up crew trying to clean up the mess.
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Old 12-20-2015, 10:41 PM   #9
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I tend to agree. But have never seen just a hole...they clean up....fast. But it was a Mandarin.


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Old 12-20-2015, 11:36 PM   #10
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I tend to agree. But have never seen just a hole...they clean up....fast. But it was a Mandarin.


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Just throwing out an idea here, but isn't it possible that your CUC just got to the carcass? The mandarin may be died a few hours before you found the body.

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