Fishes' tails all gone so short

[glencch]

T

I don't see any Cardinal Tetra in the pics.

They all died with fins all missing. ?

 

[latapy10]

Had those black tetras for 3 months when they were little and now they grown. Guppies, female Bettas, Congo Tetras, Cardinal tetras all losing their tails before they died one after another recently.

Give those black tetras to another aquarium.

 

[glencch]

These are the other fishes that are totally fine, besides the Plecos, Siamese Algae Eaters and that lone Golden Algae Eater

The rest are like having their flowing tails all cut short day after day.
Congo Tetras, Cardinal Tetras, female Bettas, and Guppies. Cardinal Tetras didn't survive in the end.

 

[tlindsey]

T

They all died with fins all missing. ?

Sorry for your loss.

 

[glencch]

These are the other fishes that are totally fine, besides the Plecos, Siamese Algae Eaters and that lone Golden Algae Eater

The rest are like having their flowing tails all cut short day after day.
Congo Tetras, Cardinal Tetras, female Bettas, and Guppies. Cardinal Tetras didn't survive in the end.

View attachment 1499645

I just googled and they are Costae Tetras, and they are fine too

 

[Rocksor]

well if 1 species of tetras have no fin problems, then you kinda know which species are the fin nippers

 

[glencch]

well if 1 species of tetras have no fin problems, then you kinda know which species are the fin nippers

Ah ok. Thanks.

 

[latapy10]

I just googled and they are Costae Tetras, and they are fine too

They arent fine,you will see another day...these 3 fishes in the circles you should remove.

 

[glencch]

They arent fine,you will see another day...these 3 fishes in the circles you should remove.

Got it. Thanks

 

[Rocksor]

Ah ok. Thanks.

How many Costae tetras do you have? Generally, you need a lot of the fin nippers in the tank so that they only focus on themselves versus other fish, anywhere from 10+ in a shoal.