Generally speaking, until you see an angelfish breed there is no guaranteed way to determine sex.
Size; the larger, the older.
Angelfish are not endangered as far as information will tell
Angelfish look like normal fish, but they are among the most colorful; they are typically the most common choice for freshwater aquariums.The angelfish is typically confused with the butterfly fish (its close relative), in order to tell the difference you will notice the spine located on the lower part of the cheekmost angelfish are rounded like a pancake and they can grow from 3-20 inches!You can search it at Google to see a picture of it but I'll tell you how an Angelfish looks like. Angelfish are Black or gray, yellow and white.
You can tell a male angel fish from a female one by all the colorful stripes it has. [the male one]
No it is not, as you can see, the queen angelfish is much more colourful. The angelfish is just black and white. Except for the male, it is colourful but not as colourful as the queen angelfish.
There are not many fish that are compatible with Angelfish. Only Angelfish are truly compatible with Angelfish.
The angelfish is a breed of fish.
angelfish can be eaten by squids
Angelfish live in water. They do not get it.
Angelfish are not dangerous to people. There are freshwater and saltwater angelfish. The freshwater angelfish grow to a size of a few inches, while the saltwater angelfish can grow up to 12-inches.
No, angelfish do not have lights on their heads.
angelfish mate in early summer
Angelfish release gas with their fins.