Forum Overview :: Mass Effect 2 :: The fish for the fish tank are at the Citadel in the model ships store.

[quote name="Jhoh Creexul (custom software)"]Also nearby there are a couple of krogan who want to eat fish from the Presidium water, you have to find someone on the Citadel who knows if there are actually fish there or not. PS florginbars sure is fucking up in this game he sucks (even at planet scanning which is pretty simple and lucrative).[/quote]