can i feed my fish tuna flakes.

[rainbow grouper]

Just intrested to know if i can thats all.

 

[bang guy]

Sure. Avoid Tuna that has added ingredients like phosphate or broth. The ingredient list should only include Tuna and water.
Raw Tuna would be a lot better though.

 

[rainbow grouper]

O.k then is it ok if the tuna is in saltwater as long as none of the water goes into my tank?