20 gallon rack system

[Lawton C]

Hey, everyone I'm new here and love the community. In my mini fish room(corner of my garage that is climate controlled) I have a 20g long rack 6 tanks, empty 75, and 40 B. 3 of the 20g are empty and I wanted to do some species only tanks. What are some recommendations?

 

[Fishnerd360]

Shell dwellers for a 20 gallon.
Spike tail paradise fish for a 20 gallon but get a good cover on them cause they will jump out.

 

[Lawton C]

Shell dwellers for a 20 gallon.
Spike tail paradise fish for a 20 gallon but get a good cover on them cause they will jump out.

The 40B is my planned shell dweller tank, but spiketail paradise fish look nice (may be hard to find around here)

 

[fishhead0103666]

Do a norman's lampeye killifish tank, these little guys have been a personal favorite of mine for literal years. These little guys don't die after just 1 year like some killifish so you can keep them for a while.
https://www.fishkeeper.co.uk/databank/normans-lampeye