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Warty Oreo

Allocyttus verrucosus (Gilchrist 1906)

Lifespan, longevity, and ageing

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Maximum longevity: 140 years (wild) Observations: Some estimates suggest these animals live up to 120-140 years (Cailliet et al. 2001).
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Joao Pedro de Magalhaes
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de Magalhaes, J. P.
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Diagnostic Description

provided by Fishbase
Adults blackish black in color; prejuveniles silvery, back greenish with large grey blotches that disappears at about 12 cm (Ref. 6548).
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Cristina V. Garilao
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Life Cycle

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Displays seasonally synchronised reproduction.
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Susan M. Luna
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Migration

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Oceanodromous. Migrating within oceans typically between spawning and different feeding areas, as tunas do. Migrations should be cyclical and predictable and cover more than 100 km.
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Armi G. Torres
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Morphology

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Dorsal spines (total): 5 - 8; Dorsal soft rays (total): 28 - 33; Anal spines: 2 - 3; Analsoft rays: 26 - 31
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Cristina V. Garilao
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Trophic Strategy

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Occurs on the continental slope (Ref. 9563), forming large shoals over rough ground near pinnacles and canyons (Ref. 6390). Juveniles are pelagic and inhabit oceanic waters in depths of less than 1000 m (Ref. 27230). They tend to be dispersed over smooth grounds (Ref. 6390). Feeds on shrimps, cephalopods, fishes (Ref. 6548); such as, myctophids (Ref. 58748).
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Biology

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Occurs on the continental slope (Ref. 9563), forming large shoals over rough ground near pinnacles and canyons (Ref. 6390). Juveniles are pelagic and inhabit oceanic waters in depths of less than 1000 m (Ref. 27230). They tend to be dispersed over smooth grounds (Ref. 6390). Feeds on shrimps, cephalopods, and fishes (Ref. 6548). The eggs float near the sea surface and the larvae also inhabit surface waters (Ref. 6390). Trawl catch rates for warty oreos, and for oreos in general, show no evidence of vertical migration during day or night (Ref. 27150), even though many of the planktonic species consumed by this species undergo daily migrations within the water column (Ref. 6390).
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Importance

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fisheries: minor commercial; price category: medium; price reliability: very questionable: based on ex-vessel price for species in this family
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Warty oreo

provided by wikipedia EN

The warty oreo (Allocyttus verrucosus) is an oreo found in all southern oceans at depths of between 300 and 1,600 m. Its length is up to 42 cm.

The warty oreo resembles the spiky oreo. However, there are differences: the body, which has a shape much like a diamond, has a lower corner not as pointed, a dorsal which is not as tall as that of the spiky oreo, and there are spines along the warty oreo's anal fin. In addition, there are two rows of scales, which are relatively large and warty, bedecking the sides of the warty oreo between the fish's pelvic fin and its anal fin. The warty oreo has a dark gray colour and is black-finned. They have only 1 spine in their pelvic fins. They have large eyes, possibly to see easier in the darkness of their habitat.

Warty oreos live in the waters of continental slopes, and they form in large schools over rough terrain. Young warty oreos are pelagic and reside in shallow waters of the oceans - less than a kilometer in depth. They eat other fish, as well as cephalopods and shrimp. The eggs and larvae of warty oreos live on or near the surface of the sea.

They are very long living creatures, the oldest living to be 210 years old. This sets it as one of the longest living macrovertebrates in the world, along with the Greenland shark, the Orange roughy and the Bowhead whale, that can reach 400, 250 and 200 respectively.

References

  1. ^ Iwamoto, T. (2015). "Allocyttus verrucosus". IUCN Red List of Threatened Species. 2015: e.T21133195A22477122. doi:10.2305/IUCN.UK.2015-4.RLTS.T21133195A22477122.en. Retrieved 18 November 2021.
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Warty oreo: Brief Summary

provided by wikipedia EN

The warty oreo (Allocyttus verrucosus) is an oreo found in all southern oceans at depths of between 300 and 1,600 m. Its length is up to 42 cm.

The warty oreo resembles the spiky oreo. However, there are differences: the body, which has a shape much like a diamond, has a lower corner not as pointed, a dorsal which is not as tall as that of the spiky oreo, and there are spines along the warty oreo's anal fin. In addition, there are two rows of scales, which are relatively large and warty, bedecking the sides of the warty oreo between the fish's pelvic fin and its anal fin. The warty oreo has a dark gray colour and is black-finned. They have only 1 spine in their pelvic fins. They have large eyes, possibly to see easier in the darkness of their habitat.

Warty oreos live in the waters of continental slopes, and they form in large schools over rough terrain. Young warty oreos are pelagic and reside in shallow waters of the oceans - less than a kilometer in depth. They eat other fish, as well as cephalopods and shrimp. The eggs and larvae of warty oreos live on or near the surface of the sea.

They are very long living creatures, the oldest living to be 210 years old. This sets it as one of the longest living macrovertebrates in the world, along with the Greenland shark, the Orange roughy and the Bowhead whale, that can reach 400, 250 and 200 respectively.

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Description

provided by World Register of Marine Species
Occurs on the continental slope (Ref. 9563).

Reference

Froese, R. & D. Pauly (Editors). (2023). FishBase. World Wide Web electronic publication. version (02/2023).

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Edward Vanden Berghe [email]

Habitat

provided by World Register of Marine Species
Known from seamounts and knolls

Reference

Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication.

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