Insaniquarium

Click empty water to drop fish food — Guppies (and Breeders) swim to it and eat. Click a coin, gem or other item that drops to collect it before it fades. Guppies grow Small → Medium → Large as they eat, and any Large Guppy that survives 10 minutes becomes a King on its next meal. Buy a predator and it will keep eating your other fish to stay fed — that's the trade, not a bug. Aliens drift in occasionally and grab a fish to eat after a few seconds; click one to fight (or feed) it off before the timer runs out. Hover any fish, alien, drone or bot for what it is. The Guard Drone, Collector Bot and Auto-Feeder upgrade automate the fighting, collecting and feeding for you — none of them can be eaten. Progress autosaves in this browser.