The
roosterfish,
Nematistius pectoralis, is a game fish common in the marine waters surrounding
MexicoThe United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...
,
Costa RicaCosta Rica, officially the Republic of Costa Rica is a country in Central America, bordered by Nicaragua to the north, Panama to the east and south, the Pacific Ocean to the west and south and the Caribbean Sea to the east.Costa Rica, which translates literally as "Rich Coast", constitutionally...
, and
PanamaPanama, officially the Republic of Panama , is the southernmost country of both Central America and, in turn, North America. Situated on the isthmus connecting North and South America, it is bordered by Costa Rica to the northwest, Colombia to the southeast, the Caribbean Sea to the north and the...
, and in the eastern Pacific, from
CaliforniaCalifornia is the most populous state in the United States, and the third largest by area. California is the second most populous sub-national entity in the Americas, behind only São Paulo, Brazil...
to
PeruPeru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean.Peruvian territory was home to the Norte Chico...
. It is the only fish in the genus
Nematistius and the family
Nematistiidae. It is distinguished by its "rooster comb", seven very long spines of the
dorsal finA dorsal fin is a fin located on the backs of some fish, whales, dolphins, and porpoises, as well as the ichthyosaurs. Depending on the species, an animal can have up to three of them. Its main purpose is to stabilize the animal against rolling and assist in sudden turns...
.
The roosterfish has an unusual arrangement of its ears: the swim bladder penetrates the brain through the large foramina and makes contact with the
inner earThe inner ear is the bony labyrinth, a system of passages comprising two main functional parts:* The cochlea is the hearing part of the inner ear.* The semicircular canals , the utricle and the saccule are the balance part of the inner ear...
.
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The
roosterfish,
Nematistius pectoralis, is a game fish common in the marine waters surrounding
MexicoThe United Mexican States , commonly known as Mexico , is a federal constitutional republic in North America. It is bordered on the north by the United States; on the south and west by the Pacific Ocean; on the southeast by Guatemala, Belize, and the Caribbean Sea; and on the east by the Gulf of...
,
Costa RicaCosta Rica, officially the Republic of Costa Rica is a country in Central America, bordered by Nicaragua to the north, Panama to the east and south, the Pacific Ocean to the west and south and the Caribbean Sea to the east.Costa Rica, which translates literally as "Rich Coast", constitutionally...
, and
PanamaPanama, officially the Republic of Panama , is the southernmost country of both Central America and, in turn, North America. Situated on the isthmus connecting North and South America, it is bordered by Costa Rica to the northwest, Colombia to the southeast, the Caribbean Sea to the north and the...
, and in the eastern Pacific, from
CaliforniaCalifornia is the most populous state in the United States, and the third largest by area. California is the second most populous sub-national entity in the Americas, behind only São Paulo, Brazil...
to
PeruPeru , officially the Republic of Peru , is a country in western South America. It is bordered on the north by Ecuador and Colombia, on the east by Brazil, on the southeast by Bolivia, on the south by Chile, and on the west by the Pacific Ocean.Peruvian territory was home to the Norte Chico...
. It is the only fish in the genus
Nematistius and the family
Nematistiidae. It is distinguished by its "rooster comb", seven very long spines of the
dorsal finA dorsal fin is a fin located on the backs of some fish, whales, dolphins, and porpoises, as well as the ichthyosaurs. Depending on the species, an animal can have up to three of them. Its main purpose is to stabilize the animal against rolling and assist in sudden turns...
.
The roosterfish has an unusual arrangement of its ears: the swim bladder penetrates the brain through the large foramina and makes contact with the
inner earThe inner ear is the bony labyrinth, a system of passages comprising two main functional parts:* The cochlea is the hearing part of the inner ear.* The semicircular canals , the utricle and the saccule are the balance part of the inner ear...
. It uses its swim bladder to amplify sounds.
Rooster fish can reach 4 feet in length and over one hundred pounds. The weight of the average fish hooked is about 20 pounds. The fish is popular as a game fish, but like most fish in the jack family (besides the amberjack and California Yellowtail) it is not considered a good eating fish.