The Koi Fish Mod for Minecraft was developed to introduce new features in the aquatic realms of Minecraft. This mod includes a more true to life method and strategy for the "survivalist" (hunter, farmer and fisherman) type of player. The methods offered before this mod were a bit unorthodox and hit or miss, and these out dated methods wasted food sources in order for the player to have bait.
Before this mod, players were not able to even see their “catch of the day.”
The mod introduces a new type of fish, in an actual mob form, that spawns in oceans and other water ecosystems and environments as permitted. As the name of the mod suggests, these fish mobs appear to be koi fish.