Consumption is usually limited to fish and other animals capable of respiration in water and would not animals include semi-aquatic such as water fowl, otters, hippopotamus etc.
See: Pescotarian (synonym)
Vegiquarium is a compound word made from the concatenation of vegi (abbreviated form of vegetarian) and quarium (the abbreviated form of aquarium)
Bob: Would you like some blood pudding?
Silvia: Is it fish blood and guts?
Bob: No, ewww that's gross.
Silvia: I think I'll pass then.
Q. Would you like some hippopotamus steak?
A. No thanks, I'm a vegiquarium.