Description: This type shares the characteristic markings of larval and transitional Sparisoma. Recruits become distinct from S. viride early as melanophores extend onto the base of the central caudal fin rays and divide the light bar on the tail. The melanophores extending into the caudal bar extend further below the midline than above (vs. equal above and below in S. chrysopterum/rubripinne). Small juveniles tend to have dark patches along the lateral midline mostly below the level of the lateral line and do not develop an obvious white tail bar. Some individuals develop a marked bicolor pattern of light above the lateral line and dark below. Later juveniles are variably mottled with some light striping and spotting and are only identified by process of exclusion (or DNA sequence analysis). Individuals from Noronha in Brazil show a pattern of reduced body markings and intensified black markings on the fins.
Diagnosis: The larvae of all Sparisoma may well be identical, and DNA sequencing is required to identify species. Transitional recruits develop the basic markings probably shared by all members of the genus, but small juveniles of Sparisoma acquire distinct patterns that separate most, if not all, regional species. The DNA sequence of the juvenile specimen from Noronha in Brazil confirms that it is S. radians (Bernardi et al 2005), even though it displays a peculiar pattern of markings. S. atomarium may be indistinguishable from S. radians when juvenile specimens are found in the same habitat.
Sparisoma radians és una espècie de peix de la família dels escàrids i de l'ordre dels perciformes.
Els mascles poden assolir els 20 cm de longitud total.[3]
Es troba des de Bermuda, Florida, les Bahames i l'est del Golf de Mèxic fins a Santa Catarina (Brasil), incloent-hi l'Amèrica Central.[3]
Sparisoma radians es una especie de peces de la familia Scaridae en el orden de los Perciformes.
• Los machos pueden llegar alcanzar los 20 cm de longitud total.[1]
Se encuentra desde Bermuda, Florida, las Bahamas y el este del Golfo de México hasta Santa Catarina (Brasil), incluyendo la América Central.
Sparisoma radians is een straalvinnige vissensoort uit de familie van papegaaivissen (Scaridae).[2] De wetenschappelijke naam van de soort is voor het eerst geldig gepubliceerd in 1840 door Valenciennes.
De soort staat op de Rode Lijst van de IUCN als niet bedreigd, beoordelingsjaar 2008.[1]
Bronnen, noten en/of referenties
發光鸚鯛，為輻鰭魚綱鱸形目隆頭魚亞目鸚哥魚科的其中一種，西大西洋區，從美國佛羅里達州至巴西聖卡塔琳娜海域，棲息深度1公尺-12公尺，體長可達20公分，棲息在海草床，以藻類、海草為食，可做為觀賞魚，有雪卡魚中毒的報告。
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