Neon tetra

[Lightinbolt]

How many neon tetras in a 100 gallon tank

[RovingGinger]

Depends heavily on: 

- other fish

- filtration

- planted or not

- water change frequency 

but the number is probably somewhere between 50-200? You can always build as you go with tetras (or even see if you can breed)! 

Edited October 25, 2020 by RovingGinger

[Lightinbolt]

Light plants and no other fish

[Fishkeeper125]

100-150

[Maggie]

Please post pics when you have them in there - seems like it's going to be gorgeous with 100 or so tetras!!

[Bill]

Is this a newly cycled tank? I've read from more than one source that neon tetras are pretty sensitive and need a mature tank that's been running for several months with good filtration. Not just zero ammonia and nitrites, but also bacteria free water column.

If it is a new tank, I'd probably use the method that Dave from aquariumscience.org uses. It's under the Cycling chapter, section titled "What I do". He claims you can get clear bacteria free water in 6 weeks using that method. It will cycle in about a week, but he continues for about 6 weeks. I've never done that, but I did use his suggestion to use Black Kow as innoculate and I cycled a tank in 9 days. Good luck!