Tetra tank mates?

[Anonymous Fox]

I was just wonderingwhat fish can live with blood fin and silver tip tetras without being bullied or killed?

 

[Byron]

What is the tank size? How many of each of these species do you have in the tank? And water parameters, especially GH?

The size of tank does bear on the behaviour of many fish, particularly those that are mildly aggressive to begin with (blood fins, presumably the species Aphyocharax anisitsi or Aphyocharax rathbuni) are well known to fin nip). As does the number in the group when it is, as here, a shoaling fish species.

Sedate fish (cichlids, gourami, and similar) should never be housed with these species. Catfish usually are ignored, generally. Fish spending time in the upper half of the water column are at most risk. We might be able to pin this down more with the requested information.

 

[Anonymous Fox]

What is the tank size? How many of each of these species do you have in the tank? And water parameters, especially GH?

The size of tank does bear on the behaviour of many fish, particularly those that are mildly aggressive to begin with (blood fins, presumably the species Aphyocharax anisitsi or Aphyocharax rathbuni) are well known to fin nip). As does the number in the group when it is, as here, a shoaling fish species.

Sedate fish (cichlids, gourami, and similar) should never be housed with these species. Catfish usually are ignored, generally. Fish spending time in the upper half of the water column are at most risk. We might be able to pin this down more with the requested information.

I have 3 of each, and a 47 gallon, I haven't tested my gh in a while, but I will today they ate all 6 neon tetras and my bristle nose pleco...

 

[PlasticGalaxy]

I have 3 of each, and a 47 gallon, I haven't tested my gh in a while, but I will today they ate all 6 neon tetras and my bristle nose pleco...

They ate your BNP??

 

[seangee]

Both of these species prefer to live in groups (of their own kind). 6 is regarded as the absolute minimum but I would suggest 10-12 of each. Less than this and they are inclined to be nippy (or aggressive) as they feel insecure.
So your first purchases really should be more of the same. Depending on your answer to @Byron's question a group of corydoras would complement them nicely - again this should be a group of 10-12. You have the space in a 47G.

Just FWIW they did not kill your BN. Any dead fish is fish food and I suspect the BN died and then they ate it.

 

[Anonymous Fox]

They ate your BNP??

Yep... I found really disturbing things checking on it... it's guts were hanging out and it's skin was pealed of in some places...

 

[PlasticGalaxy]

Yep... I found really disturbing things checking on it... it's guts were hanging out and it's skin was pealed of in some places...

That's horrific.

 

[Anonymous Fox]

Both of these species prefer to live in groups (of their own kind). 6 is regarded as the absolute minimum but I would suggest 10-12 of each. Less than this and they are inclined to be nippy (or aggressive) as they feel insecure.
So your first purchases really should be more of the same. Depending on your answer to @Byron's question a group of corydoras would complement them nicely - again this should be a group of 10-12. You have the space in a 47G.

Just FWIW they did not kill your BN. Any dead fish is fish food and I suspect the BN died and then they ate it.

They still did technical eat it. It probably died of stress bc of them bc they were acting like and anonnying little brother to them

 

[Anonymous Fox]

That's horrific.

Yah...

 

[Byron]

I have 3 of each, and a 47 gallon, I haven't tested my gh in a while, but I will today they ate all 6 neon tetras and my bristle nose pleco...

This is the major problem, too few of the two species, as @seangee mentioned. These notorious fin nippers need I would agree 10-12 minimum. Second thing then is the tank size, as there will be little room left for other species in the upper water level, assuming this tank is not more than 3 feet (90 cm) in length.

A scientifically-controlled study of the aggressive response of shoaling fish due to numbers a few years ago found that aggression was increased among naturally-aggressive species, and aggressive behaviours occurred among normally peaceful species, when the shoal was less than five. This is not to say that five is the magic number, it is simply that aggression is increased with small numbers among such species.

To answer your initial question, though still waiting for the GH re the cories, increasing the existing species groups to 10-12 will allow them to be less stressed, or alternatively if you do not want a tank with just these two, re-home them.