Fish sudden death question

[webslinger]

I did a water change then one of my Banggai Cardinal Fish is dead with a bloated stomach. He was health and swimming around the tank fine 15 minutes earlier. Does anyone have any ideas what could cause this? Could he have been by the return when I turn the pump back? This is the first fish I have ever lost, had him about 1 1/2 years.

 

[Dkuhlmann]

It could have been anything, you don't give enough information or pictures to have us even give a guess.

 

[webslinger]

What info you looking for? Picture a bangii with a bloated stomach.

 

[Dkuhlmann]

Oh the tank itself and add ons ie: skimmer, sump type of filtration, water parameters how long setup have you made any changes recently or added any livestock... I'm sure I can think of more. You need to paint a picture for us of sorts so we can picture and have an idea of what you have if you want help. Remember we aren't there to see it.

 

[webslinger]

it's a 60G with 20G sump using a sock, skimmer and cheato refug. It has been up for 20 months. no changes . Added a RTBA a few months ago, no other livestock add in last 6 months. Water parrameters have been stable and within recommeced ranges except alkalinity is a little low at 8dKH. Change 5G weekly. All fish are peacefull.

Occupants:
2 - o clowns
1 - coral beauty
1 - royal grama
2 - Bangaii cardnals ( the more aggressive one died)
1 - diamnd goby
1 - Chromis damsel
1 - clown gobie
1 - cleaner shrimp
1- pepperment shrimp
CUC - assoreted hermits and snails
RBTA
RainbowBTA
Frogspon
Torch
Duncan
Sun
Toadspool
Hammer
mushroom
gsp
Xenia
assorted Zoa's

 

[Dkuhlmann]

Thanks!

Now sorry but I don't have any really good ideas. The bta's sting won't kill a fish, the torch possibly could as well as the hammers and frogspawn possibly. But you say it was bloated? Any marks on it at all?

I'm trying to think of something that would kill only the one fish in a matter of minutes and not much really comes to mind. Too close to the pump ya possibly but not so sure. It would have to have been hit full force and even still the pressure doesn't come out like a bullet or shotgun blast.

 

[webslinger]

No no marks at all. Just out of the blue it was dead. I've never seen anything like it.