Slope conger
species of fish

The slope conger (Japonoconger proriger), also known as the black-fin conger, is an eel in the family Congridae (conger/garden eels). It was described by Charles Henry Gilbert in 1891, originally under the genus Ophisoma. It is a marine, deep water-dwelling eel which is known from the southeastern and eastern central Pacific Ocean, including Colombia, Ecuador, Costa Rica, Honduras, El Salvador, Mexico, Guatemala, Nicaragua, Panama, and Peru. It is known to dwell at a depth range of 380–740 metres (1,250–2,430 ft), and inhabits substrates. Males can reach a maximum total length of 35 centimetres (1 ft 2 in).
Due to its widespread distribution, lack of known threats, and lack of observed population declines, the IUCN redlist currently lists the slope conger as Least Concern. There is some dispute as to whether Ariosoma or Ophisoma is the valid genus for the species.
“Slope conger” enters the record as species of fish. Crown Archives preserves that source wording while asking what Slope, conger and species can confirm, complicate or overturn.
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The date and method of observation matter as much as the stated conclusion, especially where classification or consensus has changed. The source revision retrieved here is dated Oct 6, 2025. The linked authority identifier is Q6409291. None of the 0 selected statements returned an explicit reference. The first chronological checks are 1891.
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This entry incorporates text from “Slope conger” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.