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Bighead searsid (Holtbyrnia anomala) fish species and information / pictures of Bighead searsid - Holtbyrnia anomala
Bighead searsid (Holtbyrnia anomala) fish species information
Scientific Name
Holtbyrnia anomala
Common Name
Bighead searsid
Biology
Mesopelagic, but mostly bathypelagic to benthopelagic.
Classification
Classified By
Krefft, 1980
Class
Ray-finned fishes (Actinopterygii)
Order
Smelts (Osmeriformes)
Family
Tubeshoulders (Platytroctidae)
Distribution
Region
Eastern Atlantic
Distribution
Eastern Atlantic: west of Iceland to off south-western tip of Ireland, Mauritania, Senegal and Namibia. Elsewhere, tropical and subtropical western Atlantic.
Range
66°N -
Environment
Climate
Deep-water
Water Temperature From
Unknown
°C
Water Temperature To
Unknown
°C
Depth From - meters
700
m
Depth To - meters
2700
m
Zone
bathyalpelagic
Environment
Marine; bathypelagic; depth range 700 - 2700 m (Ref. 4461)
Trophic Level
3.27 s.e. 0.39 Based on size and trophs of closest relatives
Occurs in Marine / Salt water
True
Occurs in Brackish water
False
Occurs in Fresh Water
False
Occurs on Reefs
False
Is kept in Aquariums
False
Physical Size and Genetics
Maximum Length
25.0
cm
Common Length
Unknown
cm
Phylogenetic Diversity Index
PD50 = 0.5020 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)
Human Uses and Population
Human Uses
Unknown
Vulnerability
Low vulnerability (18 of 100)
Resilience
Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3)
Threat To Humans
Harmless
IUCN Red List Status
Not Evaluated