Feeding Advice?!

[Ahmed123]

I have recently started building up a fish tank and I now have 4 guppies, 5 tiger barbs, 1 angel fish and 1 discus. As a treat I'd like to feed them frozen blood worms, would one full cube be too much for them? How much of the cube would be appropriate to feed them, also how many times in a day should they be fed, I have already sought advice from a pet store but they said one feed a day is all the need but I want confirmation of this

 

[Ninjouzata]

Feeding once a day is fine, you can also skip feeding once or twice a week. How big are your fish?
If they are of decent size then they could all probably easily do a full cube. If they're still very small then perhaps try to cut it in half

 
May I ask what size tank you have? I am just slightly worried because angelfish and discus require large tanks, and the discus IIRC do not like being by themselves.
Tiger barbs can be nippy so I would watch how they act towards your other fish.