it appears to be a conceptual title or a fan-driven idea referencing the cult-classic 2004 game, Insaniquarium Deluxe
There was never a commercial release, nor an official announcement from Flying Bear Entertainment or PopCap Games regarding a title with that specific name. The Insaniquarium franchise effectively ended with Insaniquarium 2 (and the later Insaniquarium Deluxe bundles), as the developers moved on to other phenomena like Plants vs. Zombies . insaniquarium revenge of the fish