What are these schooling fish?

[dzhuo]

Does anyone know what are these large-ish schooling fish in this vid?

http://www.youtube.com/watch?v=5piTMLpVu3M

 

[Blinding Reef]

They are called Mono, they can live in freshwater and saltwater IIRC

http://animal-world.com/encyclo/fresh/perches/MonoArgentus.php

 

[zdawgnight]

They look like mono fish. I have seen them as a brackish water fish.

 

[dzhuo]

A quote from the article Blinding_Reef provided:

A minimum school size of at least three Monos is recommended, with five or more being better. They will need at least a 55 gallon aquarium with plenty of aeration. Some Monos will survive for awhile in pure freshwater but they really are brackish water fish. Their aquarium water should be made brackish by the addition of some high quality marine water salt mix, approximately 2 - 3 teaspoons per gallon. This species will also do very well in pure saltwater and usually looks their best when kept this way.

Has anyone actually kept them in reef tank?

 

[Moort82]

I've read they aren't very safe in a reef system.