headless danio... =(

Ara

Ara

Catquarium
Feb 4, 2010
425
0
16
Edmonton, Alberta, Canada
Hello all!

Sad news, I woke up this morning to find one of my new zebra danios all mangled, his head gone!

Currently, I have a cycled 5-gallon tank with a topfin 10 filter, small heater (set to 76), and several plants & caves. I recently stocked with with 4 new zebra danios, 2 fancy guppies, and a female betta that I had to 'rescue' from my 20-gallon as the other female betta (bought at same time a week ago) was biting her.

Yes, this 5g is a tad overstocked, I know, but the danios & guppies are still little, and I am just getting a new 10-gallon tank cycled for the female betta & danios..

Things were fine for 3 days with the new fishies, but this morning, one of the danios was dead, the top half of his body missing.. :confused: What was left of him was normal coloured, and all the rest of the fishies are fine..

Any thoughts?
 
I'm sorry for your loss, it's never pleasant to lose a fish. My guess is that the Danio died on its own from something else and was then scavenged by its tankmates. With that sort of stocking, you may want to double-check your water parameters just to be safe (nitrates, nitrites, and Ammonia), you may be going through a bit of a spike since you just added a relatively high bioload to the tank. It's also possible that the Danio was weakened by something else prior to arrival and it just took a little while to succomb.
 
I say the female beta in the library with the candlestick
 
I would imagine the damage to the fish was post mortem
 
it probably died first and it was then scavenged by the others
 
Could be the female Betta. I have a female Betta in the family tank that we had to remove because she killed a Neon and almost killed a male Guppy.
 
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