Unidentified Sewer Predator



The Unidentified Sewer Predator was a unknown species of fish or Snake like creature that dwells in New York City's sewer system, and often thrives in the sewer river, attacking anything that falls into its Domain. This creature is encountered once in An American Tail, by both Reese and Fievel while the duo were attempting to escape an entire colony of Beetles, although the fish was not a threat to Fievel, the creature almost chomped Reese's tail off due to one of the Beetles that bit him earlier still being latched onto his tail, which would cause a pained Reese to almost plunge into the river where the Predator was waiting after gobbling the rest of the Beetle colony that fell from the Sewer Tunnel.

However the fish manages to eat the last Beetle without causing any harm to Reese thanks to Fievel tossing several sewer rocks against the Insect, (Despite Reese's pleas in order to leave him to his fate, that he would just slow him down,) forcing it to remove its Horn fangs from Reese's tail and causing it to fall to its demise.

This creature is not shown again throughout the rest of the First Film, but it is most likely still residing in the Sewers under the city.

Trivia
The creature of the sewer still remains unidentified, it is most likely cryptid.