55 gallon Established Aggressive Tank Addition

[bobduhgeek]

I have an established tank that I would like to add some colorful fish to. The tank is 55g, planted low tech, sand and gravel sub-strait, filtered with a FX4 and a foam bubble filter. I have an angel, 5 tiger barbs, 8 rose barbs, 10 female endler - the males didn't survive and two golden zebra danio. The tank population is about two years old, the rose barbs are the newest additions and are about a year old. The tank is at about 75% population. I do 35% water changes weekly. The PH is 7.8. Temp is 78. Colorful suggestions welcome.

 

[A201]

A group of Columbian Tetras would add blue & red colors to your tank.
I keep twelve Columnaris w/ Tiger Barbs. No aggression issues.

 

[bobduhgeek]

What pH is the water in your tank?

 

[A201]

My PH is very high, 8.2.

 

[bobduhgeek]

I'm not familiar with these fish. Are they predisposed to infection or parasite?

 

[A201]

Columbians are big & tough Tetras. They live between 3 - 5 years. The pictured Columbian is 2 y.o.

 

[devsi]

I have nothing useful to add, other than to say my LFS has Columbian Tetras and they look amazing in person.

 

[bobduhgeek]

I like tetras. These look very interesting. We'll have to see if they are available around