Loner rummy nose tetra wont schoal with group

WRWAquarium

Just a question really. I've noticed last week or so 1 of my rummy nose tetras has no interest in the others. I thinks it's a small male and he sits in the same place every day and rides water flow looking for food.

He used to stay with the others. I had 6 originally and he is one of the originals. The only time he joins the schoal is to feed or at water change time when the safety in numbers must take over.

I picked up another 5 rummys at work today. I was hoping a larger group might encourage him to join them but no he ignores them all haha. Even if they go over to him. The other 10 rummys stay together all the time.

The loner looks healthy, eats fine. seems weird he ignores his own kind now. Any ideas?
 

LowConductivity

Interesting.... The "loner" and the "group" are the same species of rummy nose?
 

WRWAquarium

I'm pretty sure they are all the same species. Good shout though. Hard to get better pics of them on my phone.
 

KingOscar

Almost every group of same species fish I've kept has had one that keeps to themselves to some degree. Yet they are healthy and doing fine. I too wonder why some exhibit this behavior. Introverted fish?
 

ProudPapa

I doubt it's anything to be concerned about. When I had some there were usually two or three hiding in the plants when the rest were out and about.
 

WRWAquarium

Perhaps it's normal. I've seen it before with danios where the lowest fish on the social heirachy will break from a group. My barbs don't also group up all together often.

It seems strange for the rummy nose tetras though as they are so tight schooling it's really noticeable.
 

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