Fish
Fish are aquatic creatures which appear in numerous games in the Rayman series.
In Rayman
Fish make their first appearance in the Dream Forest, the first land in the original Rayman game. Large piranhas leap out of the water and obstruct Rayman's path; these became one of the recurring elements of the series. Rayman can defeat a piranha by delivering a punch with his telescopic fist; this shatters the piranha's teeth and sends it tumbling back into the water.
Three more varieties of fish appear in Eat at Joe's, a level in the Caves of Skops, the fifth of the game's six lands. Each of these three varieties of fish bears an exaggerated facial feature: one type has an oversized nose, with which it aids Rayman by nudging buoyant platforms through the water; another type has an oversized cycloptic eye, with which it passively observes the action; and another type has an oversized mouth and teeth, with which it attacks Rayman. These three varieties of fish appear only in the final part of this level, and are not found anywhere else.
In Rayman 2: The Great Escape
Fish appear much more often in Rayman 2 than they did in the original game. In the Dreamcast and PlayStation 2 versions, the first time a fish is seen is when Rayman arrives in the Fairy Glade to search for Ly. Several types of fish can be seen in the nearby ponds; these fish are passive, and some bear a slight resemblance to the big-eyed fish from the previous game. Later on in the same level, Rayman must cross a marsh filled with polluted water. Murfy telepathically advises Rayman not to swim in it via a nearby Stone of Thought. The marsh is infested with tiny piranhas. This piranha variety is found in many levels throughout the game; they devour Rayman should he fall into dangerous waters. Large piranhas like those in the original game first re-appear in the Fairy Glade as well. Notably, they attempt to eat Carmen the Whale's air bubbles in Whale Bay in order to soothe their heartburn.
A giant purple tentacle can be found while attempting to enter the Sanctuary of Stone and Fire without freeing Globox from the Canopy or Carmen from Whale Bay. Once Carmen is rescued, the tentacle no longer obstructs Rayman's passage.
In Rayman 3: Hoodlum Havoc
The large piranhas return once more in Rayman 3, although these ones have mechanical jaws similar to bear-traps. At one point in the Clearleaf Forest, Rayman and Globox must ascend a rushing waterfall whilst being pursued by piranhas. The same type of piranha is encountered again in the Bog of Murk, where they can be punched and defeated by Rayman.
Another type of fish is encountered in the underwater section of the Land of the Livid Dead. These fish swim passively about and do not react to Rayman's presence. Additionally, Céloche, the giant tripod boss of the world, releases a massive fish at the start of battle; it is this device that deploys the homing missiles that can defeat the boss. Similar metal fish can be found in the Summit Beyond the Clouds, specifically in the Looming Sea segment. These giant fish are attacking the boat Rayman and Globox are using to get to André's secret hideout. Once the summit comes into view, the fish stop attacking.
In Rayman Raving Rabbids TV Party
Rayman has a goldfish in a bowl inside his house as seen in the cinematics, but the fish doesn't interact too much with Rayman or the Rabbids.
In Rabbids Go Home
The only type of fish here are swordfish and they can only be found in supermarkets. Swordfish can be unlocked as a headwear for the Rabbids and also appear as XS Stuff.