2.5 Gallon Tank

[DrizzlingSkies]

Are there any fish/other marine creatures that could live comfortably in a 2.5 gallon tank? I have a few of them lying around and plan on creating a new little tank.

 

[NannaLou]

@Mick85 makes beautiful Walstad jars some are only 7 ltrs which is about 1.8 US gallons. He has shrimp and snails

Frozen themed walstad jar