Help me find the killer!

[L3CTR0N]

This morning, I woke up and found 1 dead rasbora aurotaenia nad the head of a buenos aires tetra.
The eyes of the tetra were eaten and the rasbora had a hole bitten out of its belly. My hujeta pike also lost an eye.

The current stocking of the tank is 3 senegal bichirs, a firemouth, a bolivian ram, a hujeta pike, a pleco, an angelfish, 4 rasbora aurotaenia and a buenos aires tetra.

My guess is the firemouth or senegals.

 

[tlindsey]

This morning, I woke up and found 1 dead rasbora aurotaenia nad the head of a buenos aires tetra.
The eyes of the tetra were eaten and the rasbora had a hole bitten out of its belly. My hujeta pike also lost an eye.

The current stocking of the tank is 3 senegal bichirs, a firemouth, a bolivian ram, a hujeta pike, a pleco, an angelfish, 4 rasbora aurotaenia and a buenos aires tetra.

My guess is the firemouth or senegals.

Your analysis may be correct but possibility something is going on with your fish. Check your water parameters. When fish are sick and dying the healthier fish will pick at them. Watch your aquarium from a distance and see if the Firemouth is being aggressive towards tankmates.

 

[TheNonEuclidean]

If you know it happened at night, my bet would be on the senegals. Or they couldve died and been picked at...

 

[L3CTR0N]

Your analysis may be correct but possibility something is going on with your fish. Check your water parameters. When fish are sick and dying the healthier fish will pick at them. Watch your aquarium from a distance and see if the Firemouth is being aggressive towards tankmates.

The firemouth is quite nuetral and the only one he picks on is the bolivian ram. Water parameters are 0 ammonia, 0 nitrite, 27 nitrate

 

[L3CTR0N]

If you know it happened at night, my bet would be on the senegals. Or they couldve died and been picked at...

Thats probably what happened, I did notice that the rasbora was acting a little strange yesterday. The buenos aires tetra seemed to be fine though.

 

[tlindsey]

The firemouth is quite nuetral and the only one he picks on is the bolivian ram. Water parameters are 0 ammonia, 0 nitrite, 27 nitrate

I personally had to remove a male Peacock Cichlid that had Senegal Polys for tankmates. After 2 yrs the African Peacock started to pick on the Senegal's. I think the Firemouth is the culprit.

 

[tlindsey]

If you know it happened at night, my bet would be on the senegals. Or they couldve died and been picked at...

That's possible like I stated the fish may have been dying.

 

[Gourami Swami]

My guess would be the senegals. They will try to eat long fish (like the hujeta) even if they are too big. Depending how big they are, attempting to keep them with tetras and rasboras was only a matter of time until they eat them. I've had a Senegal try to eat a pictus catfish almost as big as he was.

 

[LBDave]

If you know it happened at night, my bet would be on the senegals. Or they couldve died and been picked at...

I agree. This happening at night suggests the poly. The other fishes defenses are down and the poly is a night hunter I believe.

 

[L3CTR0N]

This has never happened before though.