Is the 16 gallon the one with the kuhli loaches? They would probably LOVE the scuds if they're small enough for them to eat (I can't tell from the pictures)
I have kuhlis in both the Endlers tank and the 16g. I'm sure they'd appreciate them but when I dropped some in last night the forktails beat all the other fish! Maybe I'll trying feeding a few after lights out.