Zodiac007

I can't decide on adding a small school of pristella tetras or a small school of cardinal tetras. By small school, I mean 5 or 6. Or glowlight tetras.

Which will look better in my tank?

55 Gallon

- 10 Harlequin Rasboras
- 1 male betta( he's find by the way, rarely aggressive, and even when he is, he can never catch the rasboras, so he gave up a long time ago)
- 1 male brittlenose pleco
- 1 rainbow shark

- heavily planted
- 2 caves
- many floating plants

So would 5 or 6 Pristella tetras look better in this aquarium, or 5 or 6 cardinal tetras?

Thank you.

Mike19

I would go for the cardinals although its a matter of personal choice, as for the betta i would recommend separating him in his own tank, it would limit any aggression or stress especially since you have a rainbow shark.

2lucky

I have 10 cardinals in my tank that look stunning against the green plants. It is a matter of personal preference but I think the pristellas (being transperent-ish) would blend into the plants a bit and be a not as striking display. But it's up to you -both fish are beautiful.

TropicalGrimmish

to me cardinals, they are major stand outs in any tank!!!

agabr123

my vote is for the cardinals too

cerianthus

Personal choice but Cardinals all the way for me. but why only 5 or 6?
In well established, planted 55G tank, I would put 20 or 30 Cardinals at once as long as the batch is good batch.. Believe me,it will look AWESOME, especiaslly with 50/50 and/or Actinic lighting on top of Plant bulb(s).
HAD FEW Hundreds in 90/125G along with other Tetras such as Rummy nose, etc.

Are you concerned about adding too much bioload at once. 20-30 Cardinals seems alot but can be easily handled w/ proper testing and pwc in well planted 55G..