Adding hatchet fish

[altidude]

My son loves hatchet fish and he'd like to add 5 to our 20g high tank.

The tank has been up 2 months and is cycled. He currently has 5 cherry barbs and 1 dwarf gourami.

Would it be OK to add all 5 hatchet fish at one time or should we split it up? I know they'll be happier in a group.

 

[cgthebeast]

Should be fine, make sure you have a lid though, I lost my entire school thanks to jumping

 

[altidude]

Should be fine, make sure you have a lid though, I lost my entire school thanks to jumping

Thanks!

We do have a lid but the opening for the HOB filter is larger than it needs to be. I'll cover that somehow.