Is there room in my tank?

[Dragonbot]

I have a fully-established 20gal tank, and am going to add more fish. I'm about to rebuild my GloFish Tetra school to 6 at least, and was thinking of getting some Glofish Danios as well. I wanted to know if they would all fit in a tank of this size. Didn't want to go on a shopping spree and end up with an overcrowded tank, you know? The only other tankmates beside the Tetras are a metric ton of snails. Would the Danios and Tetras get along? Will it overcrowd the tank?

 

[StarGirl]

Is it a 20 high or long? Danios are very active swimmers and you would need a school of them too. They will get along with the tetras as long as you keep their school up to keep them occupied.

 

[Dragonbot]

Is it a 20 high or long? Danios are very active swimmers and you would need a school of them too. They will get along with the tetras as long as you keep their school up to keep them occupied.

It's shaped like this, since I have no clue. I understand they are schooling, which is why I was worried there would be too many fish. Glad to know they'll get along with the tetras!

 

[StarGirl]

You should be fine with the 2 schools.

 

[ProudPapa]

View attachment 716472 It's shaped like this, since I have no clue. I understand they are schooling, which is why I was worried there would be too many fish. Glad to know they'll get along with the tetras!

That looks like a standard 20 as opposed to a 20 long. A long generally allows for a little heavier stocking since there's more surface area for gas exchange, but I agree with StarGirl that you should be fine.