This game is a simple, yet brutal time waster.
As the story goes... a crazy couple decided to buy a fish tank in order to improve the Feng-Shui in their home. They purchased all kinds of small sea creatures. This couple was not very knowledgeable about the different species of fish and how they would react in an environment together. As a result, predator and prey ended up together.
Help Squid Little survive in his new home, eating any tiny fish to gain calories while avoiding ravenous predators. If his calories run out, then its game over.