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・ Spot-winged starling
・ Spot-winged thrush
・ Spot-winged wood quail
・ Spot.IM
・ Spot.us
・ Spotback loach
・ Spotback skate
・ Spotband butterflyfish
・ Spotbase burrfish
・ Spotcap
・ SpotCrime.com
・ Spotface
・ Spotfin betta
・ Spotfin butterflyfish
・ Spotfin chub
Spotfin croaker
・ Spotfin flounder
・ Spotfin frogfish
・ Spotfin gambusia
・ Spotfin goby cichlid
・ Spotfin hogfish
・ Spotfin lionfish
・ Spotfire
・ SpotHero
・ Spotie
・ Spotify
・ Spotify Sessions
・ Spotjaw moray eel
・ SpotJobs
・ Spotka


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Spotfin croaker : ウィキペディア英語版
Spotfin croaker

Spotfin croaker (''Roncador stearnsii'') is a species of croaker occurring from Mazatlán, Mexico, to Point Conception, California, including the Gulf of California. It is the only species in the genus ''Roncador''. In California, they are most commonly found south of Los Angeles Harbor. They live along beaches and in bays over bottoms varying from coarse sand to heavy mud and at depths varying from 4 to 50 feet or more. They prefer depressions and holes near shore.
==Description==

The body of the spotfin croaker is elongate, but heavy forward. The upper profile of the head is steep and slightly curved, and abruptly rounded at the very blunt snout. The mouth is underneath the head (subterminal). The color is silvery gray with bluish luster above and white below. There are dark wavy lines on the side, and a large black spot at the base of the pectoral fin.
The subterminal mouth, absence of a fleshy barbel and the large black spot at the base of the pectoral fin distinguish spotfin croakers from all other California croakers. Small "spotties" are sometimes confused with small white croakers, but a count of the dorsal fin spines will quickly separate them; the spotfin croaker has 11 or fewer (usually ten), while the white croaker has 12 to 15. So-called "golden croakers" are nothing more than large male spotfin croakers in breeding colors.

抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)
ウィキペディアで「Spotfin croaker」の詳細全文を読む



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