Update time.
This past weekend ended up buying some fish for this tank. My son nixed me on the Hatchetfish and instead settled on getting 10 Cardinal Tetras (2 didn't make it). So we added the 8 Cardinals on Sunday, everyone was happy now that they could see fish swimming.
So tank occupants are now 6 banjo catfish (2 of which are eel tails) 8 or 9 algae eating shrimp (thought the banjo's might eat them, but seem to be leaving them alone), and the Orange Mexican Dwarf Lobster is total MIA (haven't seen it in quite some time now ... starting to think it perished or was eaten).
Noticed last night at feeding all 4 banjo's were out (as well as one of the eel tails) ... that was a first. Plus all 8 Cardinals were looking good as well.
Now I've never seen any of my banjo's stay at the tank surface (highest ever was mid tank) so I was surprised when I saw one of them resting at the tank surface right below the light when I came home today.

Then I counted only 4 Cardinals remaining, one of which was just a little ways below this banjo. It wasn't resting ... it was hunting.

Sweet.
I've had my suspicions, but this solidified it for me. They're not the peaceful tankmate they've been made out to be ... as the saying goes .... If it fits, it'll be eaten.
Glad my son wasn't too upset about his Cardinal Tetras ... we'll see how long the other 4 last.
