Marshall slopebrotula (Tuamotuichthys marshallensis)

Scientific name: Tuamotuichthys marshallensis Nielsen, Schwarzhans, M?ller & Randall, 2006

The Marshall slopebrotula (Tuamotuichthys marshallensis) is a marine fish of the family Bythitidae. Native range: Western Pacific, Marshall Islands.

Biology

Dorsal soft rays (total): 78-81; Anal soft rays: 62; Vertebrae: 47 - 49. Tuamotuichthys marshallensisdiffers from T. bispinosus in the following characters: downward-directed part of the opercular spine hidden (vs. free); precaudal vertebrae 11 ( vs. 13); dorsal fin origin above vertebra no. 5 (vs. no. 8); hypobranchial rakers of anterior gill arch developed as one large or five smaller plates provided with small spines (vs. hypobranchial without rakers or plates); soft interorbital 5.8-6.3 % SL (vs. 3.8 % SL); maximum head depth 20.0?-1.5 % SL (vs. 13.5 % SL); body depth at origin of anal fin 18.5-20.5 % SL (vs. 14.5 % SL); head pores present on occiput and upper preoperculum (vs. absent); interorbital and occipital head pores present (vs. absent); no scales on top of head (vs. scales present); dorsal rim of otolith high (vs. rim flat).

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name
Tuamotuichthys marshallensis
Family
Bythitidae (Viviparous brotulas)
Order
Ophidiiformes (Cusk eels)
Class
Actinopterygii (Ray-finned fishes)
Maximum length
12
Depth range
46–536 m (151–1759 ft)
Environment
Marine; bathypelagic; depth range 46 - 536 m
Climate
Deep-water
Distribution
Western Pacific: Marshall Islands.
Conservation status (IUCN)
Not Evaluated
Threat to humans
Harmless
Resilience
High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

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