Can a 2Feet hold this amount?

[shunkun]

Correct Me If I Am Wrong, Even If You Have 50 Tetras In A Big Tank, They Will Not School Unless There Is Other Bigger Fishes Around, To Let Them Feel Threatened, Thereafter They Will Stick Together?

Or As Long As You Have A Big Tank And They Will Start Schooling?

And Even If You Had 35 Tetras They Wont School I Agree. Because I See In My Eye The Population Of My Tetra From Hundreds To My Current 10. They Never School Before In My 2Ft Tank.
I Read Somewhere It's Better For 1 Fish Per 1 Gallon Of Water. Of Course You Can Add More.

My Puffer Never Touch The Tetras Before. Hehe. But It Will Kind Of Snap My Big Cory's Tail (Its Big And It Doesn't Even Scare My C.A.E Which Often Harass S.A.E, And My C.A.E Doesn't Dare Touch Cory), Weird Enough My Cory's Tail Seems Perfectly Fine @_@

[chumzhujun]

Went to seaview just now,saw the cardinal tetra,they don't school at alll. But what catches my eyes is the small lamp eye tetra. They school very closely even though in a 1 feet tank. Any advice comment if I choose it?

[hardric]

Some species school together better. But not sure which type. But I guess what u see in seaview is a good gauge of how well they school.

[hardric]

Correct Me If I Am Wrong, Even If You Have 50 Tetras In A Big Tank, They Will Not School Unless There Is Other Bigger Fishes Around, To Let Them Feel Threatened, Thereafter They Will Stick Together?

Or As Long As You Have A Big Tank And They Will Start Schooling?
And Even If You Had 35 Tetras They Wont School I Agree. Because I See In My Eye The Population Of My Tetra From Hundreds To My Current 10. They Never School Before In My 2Ft Tank.
I Read Somewhere It's Better For 1 Fish Per 1 Gallon Of Water. Of Course You Can Add More.

My Puffer Never Touch The Tetras Before. Hehe. But It Will Kind Of Snap My Big Cory's Tail (Its Big And It Doesn't Even Scare My C.A.E Which Often Harass S.A.E, And My C.A.E Doesn't Dare Touch Cory), Weird Enough My Cory's Tail Seems Perfectly@_@

My cardinals schooled in a 4 foot tank without any bigger fish. I believe the large space makes them insecure.