The broomtail grouper or mangrove grouper (Mycteroperca xenarcha) is a species of ray-finned fish from the family Serranidae which is found in the eastern Pacific along the western coast of the Americas from California to Peru.
Mycteroperca xenarcha has an elongated, robust and compressed body which has its depth at the origin of the dorsal fin is not any greater than the depth at the origin of the anal fin. The snout is much longer than the eye with the lower jaw projecting beyond the upper and with canine-like teeth at front of the jaws. The preopercle corner angle strongly serrated and there are 29-33 gill rakers. The dorsal fin has 11 spines and 16-17 soft rayes with spines 2-7 being the same length; the anal fin has 2 pines and 10-11 rats, the pectoral fin has 16-18 rays, although most specimens have 17. The caudal fin has a jagged rear edge caused by the projecting of the rays beyond the membrane. It is pale brown in colour with elongated dark brown blotches, which frequently have pale brown middles. It grows to about 150 cm in length and to 45.4 kg in weight.[3] The record catch is 49.2 kg.[4]
Mycteroperca xenarcha occurs in the eastern Central Pacific from San Francisco Bay, California, in the north south to Peru and also around the Galapagos Islands.[5] There is a single record from San Francisco Bay suggesting that it is a vagrant there.[1] Similarly although the holotype is labelled as coming from the Galapagos Islands it is the sole record from that archipelago and the specimen is most likely mislabelled and was probably taken in Peru.[3]
Mycteroperca xenarcha is found from mangrove areas to over the hard substrates of the continental shelf and the slope. It is said to prefer mangrove filled estuaries. Both adults and juveniles can be found in shallow water although adults can occur to depths of 60 m.[5]
Mycteroperca xenarchais not threatened by fisheries, although fishermen in Mexico say that it used to be more numerous. The main threat is habitat loss through the destruction of mangroves.[6]
The broomtail grouper or mangrove grouper (Mycteroperca xenarcha) is a species of ray-finned fish from the family Serranidae which is found in the eastern Pacific along the western coast of the Americas from California to Peru.
Mycteroperca xenarcha Mycteroperca generoko animalia da. Arrainen barruko Serranidae familian sailkatzen da.
Mycteroperca xenarcha Mycteroperca generoko animalia da. Arrainen barruko Serranidae familian sailkatzen da.
Mycteroperca xenarcha is een straalvinnige vissensoort uit de familie van zaag- of zeebaarzen (Serranidae).[2] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1888 door David Starr Jordan.[3]
De soort komt voor in de subtropische kustwateren van de oostelijke Stille Oceaan, van San Francisco Bay in de Verenigde Staten tot Peru en de Galapagoseilanden. De specimens waarover Jordan beschikte bevonden zich in het Museum of Comparative Zoology van Harvard University en waren afkomstig van de Galapagoseilanden.
De soort staat op de Rode Lijst van de IUCN als niet bedreigd, beoordelingsjaar 2008.[1]
Bronnen, noten en/of referenties
帚尾喙鱸，為輻鰭魚綱鱸形目鱸亞目鮨科的其中一種，分布於中東太平洋區，從美國加州舊金山灣至秘魯海域，棲息深度可達60公尺，體長可達150公分，生活在紅樹林、河口區，為底棲性魚類，屬肉食性，可做為食用魚、遊釣魚。
