Lightfish (Ichthyococcus ovatus) fish species and information / pictures of Lightfish - Ichthyococcus ovatus

Lightfish (Ichthyococcus ovatus) fish species information

Scientific Name
Ichthyococcus ovatus

Common Name
Lightfish

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 11-12; Anal spines: 0; Anal soft rays: 15 - 17. Brown-yellow in color, flanks silver; fin bases and edges of scale pockets black (Ref. 3988). Both dorsal and ventral adipose fins present (Ref. 3988). Short, deep body, small mouth with lower jaw, microscopic teeth and tubular eye (Ref. 37473).

Classification

Classified By
Cocco, 1838
Class
Ray-finned fishes (Actinopterygii)
Order
Lightfishes and Dragonfishes (Stomiiformes)
Family
Lightfishes (Phosichthyidae)

Distribution

Region
Circumglobal except North Pacific. Southwest Pacific
Distribution
Circumglobal except North Pacific. Southwest Pacific: Australia (Ref. 7300) and New Zealand (Ref. 5755). Southeast Pacific: Chile (Ref. 9068). Eastern Atlantic: scattered records along Azores and the Mediterranean, from Portugal south to Canary Islands, also Namibia. Western Atlantic: between 20?N-45?N, including the Gulf of Mexico (Ref. 27768). South China Sea (Ref.74511).
Range
46°N - 20°S, 180°W - 180°E

Environment

Climate
Deep-water
Water Temperature From
Unknown °C
Water Temperature To
Unknown °C
Depth From - meters
0 m
Depth To - meters
2500 m
Zone
bathyalpelagic
Environment
Marine; bathypelagic; depth range 0 - 2500 m (Ref. 74511), usually 200 - 500 m (Ref. 3988)
Trophic Level
3.4 s.e. 0.45 Based on food items.
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
5.5 cm
Common Length
Unknown cm
Phylogenetic Diversity Index
PD50 = 0.5078 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses
Unknown
Vulnerability
Low vulnerability (10 of 100)
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)
Threat To Humans
  Harmless
IUCN Red List Status
  Not Evaluated