Diamond watchman goby eating snails

[PaulE61]

So I added 3 Orange Marble snails to my tank, the disappeared into the sand never saw them alive again, next thing the fish is collecting the empty shells in his/her cave.
added 5 nassarius snails, same again, empty shells.
I had my last tank stood in a corner for almost a year, no heat, no flow, nothing.... was emptying and found 2 Nassarius snails alive, little survivors, so I put em into the tank, same story, turn up empty shells again, bit gutted as they lasted so long with nothing for so long.
Seems the goby has a taste for sand dwelling snails, anyone else ever seen this behaviour, is it common?.
Cheers Paul

 

[Cthulukelele]

If your diamond goby is killing them I'd be fairly surprised, but it's technically possible. You're going to have a lot less living microfauna in your sand with a diamond goby and they may be starving. Have you seen it attack them?

 

[PaulE61]

no I haven't, only seen him carrying the empty shells in his mouth, last two lasted almost a year in a dead tank, put them in the DT, they lasted a couple of days.

 

[Pvtgloss]

no I haven't, only seen him carrying the empty shells in his mouth, last two lasted almost a year in a dead tank, put them in the DT, they lasted a couple of days.

My diamond goby does the same exact thing. I haven't seen him kill them but he carries them around and build walls with them. I lose a lot of cuc.

 

[PaulE61]

My diamond goby does the same exact thing. I haven't seen him kill them but he carries them around and build walls with them. I lose a lot of cuc.

Its only sand dwelling snails he eats, leaves turbo snails alone, must be a rare trait, cant find anything online about this behaviour.
He is a bit of a character, constantly rearranges the sand to his liking which is a bit of a headache but he keeps it clean and looking good otherwise I'd get rid.

 

[Naekuh]

My diamond goby does the same exact thing. I haven't seen him kill them but he carries them around and build walls with them. I lose a lot of cuc.

i would lose it if my bricks started to move after i motar and placed them. LOL.

 

[dakoop]

I haven't heard of it but each fish is different. I had a porcupine puffer with a taste for clowns

 

[mues]

my sleeper goby carries my snails where he pleases too.

 

[Spare time]

I am guessing the fish isn't eating the snails but placing them in/around the borough for some reason which leads to their death. Kind of funny imo.