Of shrimps disappearing act...

[Sea hare]

I have some 10 shrimps in my tank including cleaner, camel, peppermint, fire and clown shrimps. They were active earlier except the nocturnal ones. Of the past few days have not seen 9 of them and only one is to be seen.. Have extensive rock work but surely they should come out at feeding time. Any ideas?

[Clement Chen]

maybe can share what other lifestock you have in there

[Sea hare]

No new ones. Shrimps have always been with the others.. In any case livestock include Flame angels, Yellow tang, Blue tang, Damsels (school of 8) Helfrisch Sand sifting goby Gammas Abelones Brittle starfish Sand starfish Sand sifting snails Sand dollars Snails Sea cucumber Corals sps and lps. Some crabs (hermit) and a couple of small stowaways. Don't think any are predatory.

[BearishCat]

My fire shrimp hides in the crevices except during feeding time. The times it didn't appear during feeding was when it was molting. But you shouldn't have 9 shrimps molting at the same time. Have you check for any sightings of mantis?

[tks 13]

Try to search for them when light off.

they are more active at night

[DottyClown]

Did you add any new LR before the disappearance?

If so, you may have introduced some hitchhiker predator.

Just a wild guess.

[stevenchia]

Worst of all, u could have a mantis shrimp hiding that came with your rock. It breaks anything. I ever caught a 1cm small mantis shrimp from a piece of coral rock. You can check whelther any new holes on rocks or corals. If there is, remove that rock,or it will be going for your fish soon.

[tks 13]

Nightmare if you have a mantis in your tank. Used to have 1 in my previous tank n all small fishes went missing with no reason.

[Sea hare]

Does not look like the mantis at work.. Tried traps and all they trapped was snails. Actually some two weeks prior to disappearance the shrimps had stopped feeding.. Did not turn. Up for feeding time nor were they scavenging. Am still foxed.. Anyways have replaced my shrimps and they r doing good now. Any ideas will help in future

[dragoncube]

Turn on your moonlight and see if they appear.

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[Sea hare]

Nopes. All gone without a trace. That's what's puzzling. Surely not a mantis problem

[ARMOURSHRIMP]

Sounds bad.

[dragoncube]

Jump out of tank? They can jump very high.

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[Sea hare]

Not that reason either. Have a cover so they couldn't have jumped. Have been a reefer some years now and this really foxes me. Gone without a trace in one week 10 of them.. Even a hungry mantis can't manage that many.. Also have got my refresh stock and they are fine. No issues. They also don't seem stressed whatsoever. Only reason I can think of is I used to feed my shrimps dead fresh water guppies. Only possibility is an infection...

[dragoncube]

MH370....

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[Sea hare]

good one

[Bulldozer]

That is puzzling because Shrimps usually got comfortable a while when they settled down as in when to feed, where to roam and where to 'perch' etc.

Time to activate the Blue Fin Sonar ?

[Sea hare]

He he he. It's actually a big mystery. If it was the mantis would surely have had other casualties like snails or crabs or something else. More puzzling new shrimp is back to 10 and they are doing fine. Moot point they stopped eating some 1 week prior to disappearance. Must be some infection which affects shrimps only or probably guppy poisoning.

[Shawn Chua]

I think they might be hiding as they r changing shell? Mine missing 1week den appear out of sudden