What animal did the Aztecs see on the lake and what did it symbolize

The Aztecs saw an eagle on the lake. They believed that it is their god's sign of conveying them that they found their new city.

Explanation:

The Aztec Empire (Triple Alliance) is the group of indigenous people lived in the Texcoco, Mexico-Tenochtitlan and Tlacopan states during 1428-1521. They are Nahua peoples who initially lived in central Mexico in the 13th century and moved by the Culhuacan ruler.

They moved to an island that is situated in the Lake Texcoco's middle. Aztecs people fond of their god Xipe Totec when they moved to the island they saw an eagle nested in a nopal cactus. They completely believed that it's their god sign of telling them that this is their new land and they founded their city.