Here are my top 10 facts about Angelfish:
1. They are one of the most commonly kept freshwater aquarium fish. This is due to their unique shape and color plus their intelligent behaviour. They are believed to recognize their owners.
2. They are thin, with round bodies and elongated triangular dorsal and anal fins. Natural Angelfish have vertical colored stripes to provide camouflage.
3. They are ambush predators and prey on small fish and macroinvertebrates. They should be fed a mixture of flake, frozen and live food.
4. They're eggs are generally laid on a submerged log or a flattened leafs.
5. When mating, they form monogamous pairs. These relationships are long term. If one of the pair are removed or die the remaining fish will often never form another relationship. When they become parents they will watch over the eggs until they are hatched.
6. They originate from the Amazon River, Orinoco River and Essequibo River basins in tropical South America.
7. They are best kept in a warm aquarium, ideally around 80°F (27°C). The prefer a pH of below 7.5 but can thrive in a wide range of pH values.
8. They generally reach maturity at around six to twelve months. If the eggs are removed immediately after spawning they can spawn every seven to ten days.
9. It is relatively easy to breed them in an aquarium.
10. Breeding them can make it very difficult to identify their gender until they are ready to breed and also can remove their rearing instinct resulting in them eating their young.
Article Source: http://EzineArticles.com/?expert=Brian_Malone