Another Mysterious Disapearance

 
A while ago we had one of our Honey Gourami go walk-about.  No body, no remains of a body, nada.  Just disappeared into thin water.

Usually with a loss, like the duff lot of Black/Silver Mollies we had that came with White Spot as a freebie, there's a body floating around in the tank somewhere, sometimes caught up in one of the "plants".

On Thursday, we couldn't account for one of our Cherry Barbs.  He was there at morning feed and roll-call but not at evening roll-call.  Couldn't easily spot a body so left it to today's water change to take out every piece of décor and do a deep clean of the gravel.  Nothing.  Checked in the pump and thermometer housings.  Nothing.

So where did he go?  Given that during a recent test we did on holiday feeding, they only consumed about ¹/₄ of a feeding block in 2 weeks, I don't believe it feasible for the whole remains to have been eaten in the 12 hours between roll-calls.

As a precaution we did before and after water parameter checks for the normal weekly 20% water change.  We had NH₃ 0, NO₂ 0, pH 7.5 & Temperature 24^oC.  NO₃ before was 40 and after 10.  Nothing unusual there then.

Just another fish keeping mystery.  Unless you know better ......
 

 
The wanderer returned!
Yesterday Mrs Adenann was doing a deep carpet clean as the dog's been moulting like crazy.
Deep down in a tiny gap between the carpet, the fireplace and the cupboard where the tank sits she found our missing Cherry Barb.
Sadly, after 2 weeks he was a bit crispy and didn't respond to CPR.
Hard to see how he got through the tiny gap between the lid and the tank sides. But it's good in that we now know it wasn't disease or cannibalism, just plain suicide/stupidity.
 

 
Yes, I'm prepared to assume the Gourami we "lost" in February went the same way but, being too big to get down the side of the carpet, ended up in the dog who is better than a hoover where food's concerned.
 

 
Thanks for your interest, but what you've suggested doesn't seem to fit in with what happened.

All tank mates were selected via the Community Creator tool on here.

We have Cherry Barbs (now 4), Yellow Honey Gourami (3), Male Guppy (6) & False Julii Corydoras (4) in an 80L tank.

Can't be anything nocturnal as he went missing between morning feed/roll-call and evening roll-call.

Thanks anyway
 

All tank mates were selected via the Community Creator tool on here.

Just a little note to mention that, great as the Community Creator tool is, it is guidance rather than a guarantee that different combinations of fish will actually work in practice - there is always scope for a rogue. For example, I have a harlequin rasbora (allegedly a peaceful species which gets on well with most fish) who takes complete possession of a large portion of the tank during the afternoon - woe betide any of his own species or any of the x-ray tetras who dare enter his territory during those hours!