Perch

The Perch is a freshwater fish found in Age of Empires II and Age of Mythology.

Age of Empires II
The first appearance of Perches is in Age of Empires II: The Age of Kings. They are the rarest species of fish appearing in-game, but also among the less valuable ones.

They are tied with the Shore Fish for yielding 200, and appear in few maps, such as Continental, Nile Delta and Salt Marsh.

Age of Mythology
Perch make another appearance in the Age of Mythology game, where they appear much more frequently than in Age of Empires II.

They typically appear in Egyptian/African-themed maps, most notably in River Nile, and might coexist with either Mahi-mahi (in some Mediterranean maps) or rarely, Salmon (only in the Midgard map, the only case where Perches appear in a Norse themed map). Like the other two species of fish, they yield unlimited food.

History
"Scientific Name: Family Percidae Approx. Size: varies Diet: varies, predominantly plankton and small fish Perch are a diverse assemblage of fish species native to fresh water around the world. The Nile Perch, Lates niloticus, is among the largest of freshwater fish, but while it lives in Lake Nasser, it is unclear whether this species ever lived in the ancient Nile. Some fish caught by ancient Egyptians are recognizable today, such as tilapia and tiger fish, while others are more difficult to recognize."

Trivia

 * The Nile Perch species hinted in the Age of Mythology history section isn't related, in reality, to the Percidae family.
 * Ironically, while they are freshwater species, perches tend to appear frequently in brackish (such as in Salt Marsh) and saline (such as in Midgard) waters.