UPDATE
Well i purchased x8 locusts at 15p each and also a small tub of "wax worm" for £2.50
The locusts are about 1 inch and the worms about half-inch.
I aware feeding locusts is not unusual for certain fish, but not sure of wax worm so will research / ask around before i use them
So i far i have dropped three locusts in one at a time. The Pink Tail got two of them and one of the Rainbow's munched the other one.
Actually it's the first time i have ever seen the Pink Tail take food from another fish (he snatched one locust from a posse of Rainbows) so this is encouraging as usually the Pink Tail is very passive at feeding, a very polite eater
maybe a bit too polite sometimes.
EDIT: from a quick look about on net, Wax Worms seem pretty safe for fish, high in protein, although a little fatty so be used more as a "treat" from what i understand
.............
okay some wax worms have gone in, Chalceus has eaten a few of them, and actually i saw him pursuing a wax worm that a Rainbow spat out and it's very rare to see the Chalceus in the bottom half of tank, even for prawns or bloodworm he wont go past the upper half level of tank but he did for the wax worm.
Rainbows are munching quite a few, so larger worms like meal worms might be better here?
Parrot's showing no interest in worms or locusts which is good as they are dominating too much at feeding time generally.