They loved it - the little pigs ate as if they'd never been fed - and it was so funny to watch them hide under the bridge ornament in the tank, watching the gravel. The moment a shrimp popped it's head out, one of the fish hoovered it up!
So I'll let them have that once a week as a real treat. They also vary between flake and pellets, and love peas, sweetcorn, orange, banana and daphnia.
So much more yet to try!