Cardinal and Neon Tetras?

ONeill074

Large Fish
Nov 27, 2005
101
0
0
New Jersey
#1
When I set up my 20 gallon long tank, I planned on having a school of Cardinal Tetras. I bought 10 and half of them died within the first week. I bought a few more and a few more died again. I got tired of losing fish so I decided to buy some Neon Tetras because they are a bit hardier. Anyway, to make a long story short, I now have 4 Cardinal Tetras and 3 Neon Tetras.
I know that you’re supposed to have a group of 6 or more of these particular tetras. Even though they’re two different species, they look so similar that I wonder if they even know they are different. They all stay together as a group and act as one species.
I also have 6 Rummy nose Tetras in the tank.
Has anyone ever kept Cardinal and Neon’s like this before?
 

Endl98

Large Fish
Jul 26, 2006
195
0
0
long island , new york
#2
yes. right now i have 3 out of 30 that died. 2 neons and 1 card. i also couldnt keep them alive for more than a few days.
found out i had a bad test kit and mile high parameters. killing only the tetras.

when i had mine they schooled together. they didnt mind each other.