''Adelosebastes'' is a

monotypic In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispec ...

genus Genus ( plural genera ) is a taxonomic rank used in the biological classification of extant taxon, living and fossil organisms as well as Virus classification#ICTV classification, viruses. In the hierarchy of biological classification, genus com ...

of marine

ray-finned fish Actinopterygii (; ), members of which are known as ray-finned fishes, is a class of bony fish. They comprise over 50% of living vertebrate species. The ray-finned fishes are so called because their fins are webs of skin supported by bony or hor ...

belonging to the subfamily

Sebastinae Sebastinae is a subfamily of marine fish belonging to the family Scorpaenidae in the order Scorpaeniformes. Their common names include rockfishes, rock perches, ocean perches, sea perches, thornyheads, scorpionfishes, sea ruffes and rockcods. D ...

, the rockfishes, part of the

family Family (from la, familia) is a Social group, group of people related either by consanguinity (by recognized birth) or Affinity (law), affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its ...

Scorpaenidae The Scorpaenidae (also known as scorpionfish) are a family of mostly marine fish that includes many of the world's most venomous species. As their name suggests, scorpionfish have a type of "sting" in the form of sharp spines coated with venom ...

. The only species in this genus is ''Adelosebastes latens'', the Aleutian scorpionfish. It is found in the northern Pacific Ocean.

Taxonomy

''Adelosebastes'' was formally described as a genus in 1979 by the

ichthyologist Ichthyology is the branch of zoology devoted to the study of fish, including bony fish ( Osteichthyes), cartilaginous fish (Chondrichthyes), and jawless fish (Agnatha). According to FishBase, 33,400 species of fish had been described as of Octobe ...

s William N. Eschmeyer,

Tokiharu Abe was a Japanese ichthyologist and a government official of Ministry of Agriculture and Forestry. Career Tokiharu Abe was born in Tabata, Tokyo, emigrated to Taiwan with his family in 1919, graduated from Taipei High School and was admitted to ...

and Soji Nakano when they described its only species''Adelosebastes latens''. ''A. latens'' was described from types collected at the

Emperor Seamounts An emperor (from la, imperator, via fro, empereor) is a monarch, and usually the sovereign ruler of an empire or another type of imperial realm. Empress, the female equivalent, may indicate an emperor's wife ( empress consort), mother (empr ...

and the

Aleutian Islands The Aleutian Islands (; ; ale, Unangam Tanangin,”Land of the Aleuts", possibly from Chukchi language, Chukchi ''aliat'', "island"), also called the Aleut Islands or Aleutic Islands and known before 1867 as the Catherine Archipelago, are a cha ...

. The generic name ''Adelosebastes'' is a compound of ''adelos'' which means "unseen" in

Greek Greek may refer to: Greece Anything of, from, or related to Greece, a country in Southern Europe: *Greeks, an ethnic group. *Greek language, a branch of the Indo-European language family. **Proto-Greek language, the assumed last common ancestor ...

, the allusion was not explained, it likely refers to this species occurring in the "poorly explored" Emperor Seamount Chain at depths of ; and ''

Sebastes ''Sebastes'' is a genus of marine ray-finned fish belonging to the subfamily Sebastinae part of the family Scorpaenidae, most of which have the common name of rockfish. A few are called ocean perch, sea perch or redfish instead. They are found i ...

'', the

type genus In biological taxonomy, the type genus is the genus which defines a biological family and the root of the family name. Zoological nomenclature According to the International Code of Zoological Nomenclature, "The name-bearing type of a nominal f ...

of the subfamily

. The specific name, ''latens'', means secret in

Latin Latin (, or , ) is a classical language belonging to the Italic branch of the Indo-European languages. Latin was originally a dialect spoken in the lower Tiber area (then known as Latium) around present-day Rome, but through the power of the ...

, again the authors did not explain this allusion but it is probably in line with their use of ''adelos'' in the genus name.

Description

''Adelosebastes latens'' has 12 spines and 13 soft rays in its dorsal fin while the anal fin has 3 spines and 5 soft rays, the last ray being a double ray. The suborbital ridge has weak or no spines present and the pectoral fin may have two lobes. The overall colour in living specimens is bright crimson red, although this fades to yellowish in preserved specimens. In some specimens there may be dark markings on the nape and the back. There is normally a black mark on the rear of the gill cover and some black spots on the membranes of the dorsal and pectoral fins. There may also be three bands of indistinct black spots on the back. The maximum recorded standard length is . There are robust s[pines on the head which can be up to in length.

Distribution and habitat

''Adelosebastes latens'' is found in the northern Pacific Ocean and has been recorded from the length of the Emperor Sea Mount Chain, the most westerly and northern part of the Hawaiian–Emperor seamount chain which extends north from the western end of the Northwestern Hawaiian Islands to the Kuril–Kamchatka Trench. They are also found in the Aleutian Islands. This is a bathydemersal fish which may be dound at depths between .

References

{{Authority control Sebastolobini Taxa named by William N. Eschmeyer Taxa named by Tokiharu Abe Taxa named by Soji Nakano Monotypic fish genera