Sudden death of my Betta (long)

Blinky

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Jun 22, 2004
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Just wondering if anyone's got any idea what happened to my little guy:
I woke up this morning, and went to check my 45g community tank and feed my fish. To my dismay, my male betta was dead on the bottom, his fins were almost shattered looking (no white edges or anything, just... broken into pieces like they were very brittle). I've only had him since February, and I know some people have kept bettas for several years. He was large when I purchased him, obviously full grown, and he's always lived in a well maintained, large community tank with non-agressive tankmates - in other words he's always been top dog.
There have been no recent changes to the tank, or the chemistry (I'm pretty militant about keeping the tank and fish in good health, I love my little guys). The fish have all been getting along, and until this morning the betta was a picture of health; a gorgeous, bossy little piggy. I did notice that lately (last couple weeks) he's seemed almost grumpy. Is it possible he was just getting old? Has anyone else had their betta die and his fins fall apart? I was wondering if he came down with some horrid, sudden overnight disease, or if their fins usually do this when they die?
Any thoughts would be appreciated.

Tank information:
45g 'high' (36"l x 12"w x 24"h)
pH steady 7.4
temp steady 80F
NH3 and NO2 0
NO3 5-10mg/L (it's 5mg/L out of our tap, I don't let it go over 10mg/L)
PO4 .25mg/L (lowest measurable level above 0 w/ my kit)
UGF, Fluval2 (for circulation), Penguin 170, Aquaclear 150
Decorated w/ plastic plants, driftwood and bogwood
25% weekly water changes, I vacuum the gravel with a Python and use dechlorinator
The tank has been up and running since a major (sterilizing) cleaning about a year ago.

Fish:
5 calico platys
5 otos
2 skunk corys
4 pygmy corys
3 fm pineapple swords
8 neon tetras

Diet:
varied; Tetra staple flakes and bottom feeder pellets supplemented with Tetra spirulina flakes, Tetra colour bits, bloodworms and daphnia.
 
perhaps i have a mental image of what his fins look like wrong. im guessing he died, and perhaps the scavangers nibbled on him?
Was it his caudal and dorsal fins? or what?
And where did you purchase your betta?

My mothers and sisters died suddenly from ich, though, they had spots, and the fins were brittle looking. falling apart, really.. little fin bits floating around the tank. eew.

~~ T{Y}PO

also, were his gills flared? if he got caught inder a plastic plant, that could have ripped his fins and/or he could have suffocated.
 
I know that the fish that you have with him, could hardly cause enough damage to kill your betta. Did you notice anything different about him before you found him dead? If not, it may have been old age. I know someone who's female lived to be about four or five, but that's a female, they live longer. From my personal experience, males only seem to live about two years, three if your lucky. And, if you haven't noticed any difference in him in the last few days or so, there are not too many diseases out there that kill in just one night.

I think it may have just been his time to go, probably old. And, his fins just got nipped on by the other fish after he died. Because, cories and tetras will eat parts of dead fish.

Sorry to hear of your loss
Lakota
 
Swordtails are far too active and nippy for bettas. They can be aggressive. Platies less so, but all livebearers can be aggressive towards shy bettas. I don't see a betta being top dog in a tank with livebearers.
 
I thank everyone for their replies! In answer:

I bought my betta at Big Al's.

I've had experience with ich, and none of the fish look at all sick, the betta didn't have any symptoms either.

His gills weren't flared (they were sticking out a little bit but nowhere near flared right out), and he didn't look like he'd gotten stuck, though I never even considered that might have happened, you never know.

ALL his fins were breaking. Teeny bits of fin were left in the net after I fished him out.

kikuchiyo, I think that you've got a point, but our swordtails are still small (1.5" or so), they're all females, and if I had ever once seen my betta being harassed I would have instantly moved him into another tank. (I have a 10g standing by for QT, hospital or other needs) I checked his fins regularly to make sure he wasn't being bitten or shredding his fins on plants, and when I watched them every day (my therapy session) he always seemed very bossy, and in charge; never a retiring, shy fish. He often pushed others out of the way for food, and never seemed threatened by any of the other fish (they were always the ones to back off).

Every other fish seems fine, so hopefully he was just an old man who had been slightly chewed on when I found him.

Thanks again for your ideas, much appreciated.
 
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