Angelfish

This is the result of much trial and error, all the information that is here
is my own personal experience, so it may differ from your own experience
or books on the subject. I started years ago with a dozen small marble
angels, grew them, had them pair off and experimented from then on.
 

At the moment , there are aver 30 pairs set up, depending on their size and type
they are setup in smaller (15 gal) or larger (30 gal) tanks. The 15 gallon tanks are
18 inches high, since angelfish prefer tanks that are deep.
None of them are on a central system, the substrate is sand, and to clean them can
be quite easy.
Just syphon off the sand as you partial the tank, rinse the sand in not too hot or cold water.
Then replace the sand and add new water.
Water sprite, riccia, amazon swords, java moss and cryptocorne are my preferences
of plants to use.
The water here is usually a PH of 6.8 and is very soft. I am not into technical terms.

All angels get something vertical to lay their eggs on that can be easily removed,
but they don't always comply. A piece of slate about 12 inches long would be ideal.
Depending on the pair, I let them hatch the eggs or I take them away to hatch in a bucket.
Usually first time pairs eat their eggs because of nervousness. But you can always see how
they do on their second time, if it looks bad take them out. But make sure that when you're removing them the eggs are firmly attached to the object, if not siphon them out. They are amazingly resilient.
Keep them at least as warm as they were. Aerate.
 

Approximately day 2 or 3, the eggs seem to start vibrating, if you look closely, you can see
what looks like a thread  with a glob of jelly full of life, attached to the slate. From the end
of this shimmering mass is a tiny tail. As they get older , you know the day for the first swim
is near when you can see them doing test flights.  It's usually 10 days from the day the eggs
were laid until they are swimming.
That is when some of the parents get too nervous and decide that they will protect them
forever.
That is to say in their own perverse way , when they eat their young, they are actually protecting them. When the parents get used to doing this , they get a taste for eating eggs and babies.
That is why , if you see the young disappearing , its time to rescue them.
Even if the parents have eaten their babies, all is not lost, next time you know to take them
away, and eventually they should unlearn that habit.
 

Newly hatched brine shrimp is the food for baby angels.
Feed them at least twice a day.
Be careful to see that you are not over or underfeeding. Experience will tell.
If all the babies have healthy, round, golden bellies then you know all is well.
Sometimes the fish are not strong enough and they will not survive.
This usually happens with the pairs' first batch.
If it happens more than that , look into how you are conditioning the parents.
.

Don't expect great results if you're just feeding them flake food.
Live food is the best, but you can feed them shrimp, chicken, peas (without the shells),
experiment and see what they like. (nothing greasy or tough)
Not all angelfish like the same thing , so don't feed them excesses of anything until you
know they like it.