fish in my aquarium,they are my pets :). The biggest one is aquarim shark! Unfortunately,I don't know the others names.(Those who know are welcome to share it with me :))

dont you know the others names ?
its easy the first its call fish
and the second call fish too
hahahahahaha

The convicts may eat their fry because of the other fish; it is an over active defense mechanism. If you move them to their own tank or divide the tank, this could solve the problem. Usually cichlids are very good parents, very protective.
When the fry can eat on their own, move them to a nursery tank.
But be prepared to have to move them; sell or give them away.
The one in the photo is the male.

’’They eat like a horse. He probably recognizes you when you enter the room. “Feed me, feed me”. They are like a dog with fins. :D’‘
they act just exactly as you marked!! and I call them Oskars but from now on I willl call them Red Tiger Oskars :D
yes,the third one seems to be Pink Convict,but I haven’t noticed their aggressiveness. only once in a while they spawn and for some time after that they guard their roe but that doesn’t last long, eventually they eat it themself !! :(
thx for information !!!

From top to bottom:
Common name: Red Tiger Oscar
Scientific name: Astronotus ocellatus
http://www.youtube.com/watch?v=YGE5hYLTu5M
They eat like a horse. He probably recognizes you when you enter the room. “Feed me, feed me”. They are like a dog with fins. :D
They are prone to a disease called “hole in the head”. Keep their tank clean by doing partial water changes. ;)
Common name: Iridescent Shark
Scientific name: Pangasius hypophthalmus
The third, I am not positive but I think it is a Pink Convict.
Common name: Pink Convict
Scientific name: Archocentrus (Cichlasoma) nigrofasciatus
http://www.youtube.com/watch?v=qZxlzL4nCZ8
The Oscar and the Convict are both New World Cichlids. The Convict is probably more aggressive than the Oscar. Oscars just want to eat.

The smallest one is likely to be a golden carp that makes all your dreams come true;)
and another one might be an unprecedented piranha;)