Hi, Danny...........
Ahh........good view!
Yes....this little pot,buckets.jarc,etc.pp......are for separating fish for a short period of time!
When you have juveniles that grow faster than the others,you can easily seperate them .........until the other have the same size and then you can put them back!
Also I have some smaller tanks (10 Liters,20 liters ,40 liters) for Quarantine new fish or fish with a disease or injuries!
I keep all of my snakeheads as a couple or as a group until a couple has found themselves!
You also can see some of my dead fish........lying in alcohol!
They are samples for sientists and Museums.......
Pascal