What are these in my reef aquarium

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Hi guys hoping you can help what are these that Keep popping up in my reef aquarium

ajm83

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Reply #1

Hi @Leonjeffrries welcome to ReefBase

Those look like nudibranchs,  have you added got any montipora or zoas in the tank?  If so I would check them over very carefully for any others (and more importantly their eggs!)

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Leonjeffrries

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Reply #2

Hi Andy, @ajm83  thanks for getting back to me. yes I have just added two groups of ZOAS on rocks to the aquarium. so that must be the case :) are these bad for your aquarium or will they just munch on algae. if so how can I get ride of them or treat for there eggs. other than net removal from the glass ?

ajm83

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Reply #3

We commonly see in the hobby ones that eat either zoas or montis, so I would try and remove any you find(plus their eggs) if you can...  dips will dislodge the adults but not do anything to the eggs so those need to be removed with a brush or something

The zoa eating ones can be very hard to spot! They can take on the colour of the coral.   That said the zoa eating ones I had were more 'bristly' than what you have there, so they might be some other kind
Last Edit: Nov 13, 2020 12:58:40 pm by ajm83

Toper0

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Reply #4

Could they be these?

Amo Manik

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Reply #5

Nudibranch, some wrasses will actively eat them.

marine_newbie

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Reply #6

They apparently are good for aiptasia control, but may also take a liking to coral?


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Amo Manik

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Reply #7

Not all nudibranch eat aips some will only host cetarin corals and live of them, these ones normally take on the colour of the coral so are hard to see.

Animal

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Reply #8

Not much to add to this that hasn't been said above already,
Def nudibranch though
Dave
 8D

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