When talking about "school's" of say tetra's, i'e; "best in school's of at least ten", is it ok for that "school" to be made up of different type's of tetra??

I'm planning on getting a school of cardinal's or rummy nose for my new tank but have some "left over" ( :oops: ) neon's in my smaller tank and was wondering if they would be ok with my planed new fish??

I would say best to have a min of 6 best around 10 of the same as they will school with there own kind. Then depends on the size of fish, like neons you can have 20 or more.

Mal.

Im pretty sure that neon's will school with cardinal's or other tetra's that are similar..

It's just that i'm planning on having 10 cardinal's but have 4 neon's and a rummy nose in my smaller tank which I was hoping to move in with the cardinal's. I did have 5 rummy nose and 5 neon's together and they got on well?

should be fine

They only school when they are stressed out.

They only school when they are stressed out.

Some-thing new I didnt know

"They only school when they are stressed out."

Does that apply to all school fish ie Harlequin rasboras? because i notice my 20 spread out throughout the tank most of the time, except for when im doing water changes or something...

I find that with my neon tetras, they school when the numbers are low.

I had 20 at the start, they never really school that much, just hanging around loosely in my tank.

But then I thought it was too many, so I sold 10 of them, and now they always school.

Also because I took some tall plants out, so less shade and they probably feel less safe.

So they only school when not feeling 100% safe I think.

How much each species schools varies. Some are more inclined than others to do so but, as said, all do it when stressed.

Harlequins look at their best when in a group of 20 or more. Their colours are stunning. You never get to see them at their best when you only have a few of them.

When I had neons...sometimes they'd all "hang out" together...sometimes not!

Caper

Yeah, fish school when a predator is near so they look like a bigger fish.