I really wouldn't try to raise guppies with an angelfish. Jaymi's rule is most appropriate. The angelfish are just doing what they are supposed to do. They also will eat smaller neon tetras and other little tetras and livebearers.

I wish that your pet dealer had told you that those fish would only be compatable (maybe) in a community tank where no fry or breeding was expected.

A couple of the early sections of the Immediate Help links will make several suggestions for how one can save fry from adult guppies. With enough live and rinsed, previously frozen, foods, space in the aquarium and shelter, usually in the form of floating plants and a thicket of plants on the tank bottom, females will leave most of their fry alone.

Those threads will also offer information on when fry can be sorted by gender. That is sometimes called "sexing them". That is a trick used by people breeding guppies for show or to improve their lines of guppies.

Indeed there is a whole school of thought on breeding livebearers which suggests that livebearers (or at least wild form livebearers) are best raisied in a colony. In time adults, if at all well fed, will begin to accept fry as a usual part of their world.

Now people trying to keep a specific strain of guppy (or Betta) going, will separate fry and only breed the best individuals to each other, when they show adult size, finage and colors. That, however, takes several aquariums.

If you wish to just have a tank of guppies or a community tank of adult fishes, that is fine. What we wish to do with our aquatic pets will dictate what arrangement our aquarium or aquariums will take.

I hope the above comments are of some use to you, Ashutosh. Please let us know how the remaining fry do.

I don't know that one can buy FAMA (Freshwater and Marine Aquarium) Magazine where you live. The most recent edition (for May 2006) has an article on Guppies. The best part of that article is where a leading guppy breeder is interviewed. He makes a number of useful suggestions on raising show guppies. And not surprisingly, not all of his suggestions are what I would think of.

If you can not get that article in a store or library, maybe in a week or two (when my computer is hopefully restored to health), I could scan that article.

Where people can buy FAMA (in a few pet shops, in a lot of magazine dealer's stores and "big box book stores") it would be better if they just went and bought the issue. That issue also has an interesting looking series on fish nutrition and on the Aspidoras, a genus of little catfishes which are close relatives to the Corydoras.