urgently please help!!!

Everything was going great until the last few days.
I'm losing fish, like 4 a day, before they died I saw torn fins(mostly on guppy's) and kuhli loavhes with no tails.
I lost 3 cories, with torned fins.
I removed. A danio and cae, but it was not them, I removed the one sailfin male molly and it was not him
Now who can next?
I have 3 neons
3 glowlights
2 sae
7 corie
1 eel
+-10 guppies
+-10 mollies
+-10 platies
3 swords
2 darf gourami's

Please help!!!

 

The eel...

 

My money is on the 2 darf gourami's maybe the eel - but having never had an eel I can not say it is so the darf gourami's love live food - hence I nolonger keep any gourami.

Later Ferdie

 

What size tank do you have? And what ize is the eel? What species eel?

 

Valid question - I have zero experience with eel's ... maybe another - is your eel growing very fast ?

 

- ok this is probably the indicator that the eel is out for a midnight snack ...

 

Its a 4 foot tank, I'm not sure what species he is.

 

Nitrite / finrot?

 

This morning everything was fine, we were out for the day, tonight I discoverrd 3 dead kuhli's 2 injured guppy and one dead guppy

 

If it's the eel (often predators) should it eat the other fish instead of killing them and leave them after that i think.

 

Im more of a Tanganyikan Guy, but my money is on the Eel, most of them are known to eat live foods, which does consist of fish. Are the fish that have been attached smaller than the eel?

 

But if so you won't find dead fish. They will simply "disappear".

 

If the eel is still too small to swallow the victim. I am certain it is the eel, not good in community tanks at all

 

Nitrites 0, and it does not look like like fin rot, no infection on them,, can clearly see an attack was present

 

hi like @len.weideman said the eel. maybe remove him and see what happens.

 

Dude it is the eel take him back. Good luck. Can you move the eel for one night and see if you loose any fish.

Sent from my GT-I9100 using Tapatalk 2

 

Must be the eel than. But why do they all die and are not only wounded and are not eaten?? Finrot doesn't kill in one day indeed

 

Jip, I can't understand this. Thanx for everybodies help, I will see if I can remove the eel, though its crap difficult. I'm also removing the gourami's

 

Any pics of the fins? are they torn, like a split in the fin or like a chunk of the fin is missing?

 

Could be a group effort: Gourami's attack and injure the fish and when they go to rest, the eel takes them out. If it's a spiny eel, then it's unlikely he'll hunt the guppies in open water.