Thank you much for the advice, I will start feeding them twice a day (can't just cut them poor fishies to once every other day
it's their only joy in life - apart from chasing each other around the place)...
what brought me to feeding them this often though are two things:
1) instructions on the can of fishfood I bought
2) the change in behavior, at first, the didn't seem to eat much, at that time I only had a can of tropical fish food - red pellets whick sank to the floor and polluted my gravel.
my angels didn't seem to eat at all, so I went back to the market and asked for some "angel-friendly food". They recommended brine shrimp dried cubes.
Fish seem to be enjoying, all but the angels
they eat too but without much enthusiasm.
then I got them tiny live bloodworms or whatever they are called, the fish loved them to the point where one of my angels started scavenging the bottom of the tank with the rest of the fish looking for remaining worms.
now whenever I feed them (I tap on the glass before feeding everytime, so now they know when it's time to eat), all of them swim to the bottom of the tank and look for worms
but I've run out of worms for the last couple of days :(.
however, it looks like the fish started eating more food after the worms were introduced
don't know if it's good or bad
thank you much