Bathyraja Pacifica
📖 Overview
Bathyraja Pacifica (Bathyraja pacifica) is a ray-finned fish of the family Arhynchobatidae. It inhabits marine (saltwater) waters in deep-water environments. This species can reach a maximum total length of 122 cm. It occurs at depths between 1760 and 1789 metres. With a trophic level of 4, it is a mid-level predator. It is assessed as Least Concern on the IUCN Red List.
🔬 Taxonomy
🐟 Physical Description
This large species (to 122 cm TL) is distinguished by the following set of characters (based on the unique holotype specimen): strongly depressed and quadrangular disc with narrowly rounded apices, width 64% TL, 1.1 times its length; rather short tail, its length 0.8 in distance from snout tip to rear of cloaca, and width 1.8 times height at its midlength, 1.5 times at first dorsal-fin origin; pre-upper jaw length 18% TL, which is 2.3 times internasal width; ventral head length 32% TL; long and broad snout, length 4.0 times interorbital width, supported by slender flexible median cartilage; angle of snout 83°; narrow mouth 7% TL; orbit diameter 57% interorbital width; first dorsal-fin height is 1.7 in its base length; procaudal length 2.3 times first dorsal-fin base length, 4.8 times caudal-fin length; dorsal disc and almost entirely devoid of fine denticles; disc thornless, other than narrow alar thorn patches; tail with 16 (one lost) thorns in single median row; total pectoral radials 84-85; trunk centra 34; predorsal centra 105; total centra ca. 136; tooth rows in upper jaw 29; the skin is thin and almost entirely translucent white, no dark areas on body, sensory pores indistinct (not dark edged) .: other (see remarks); Cross section: flattened.
🌀 Behaviour
Behavioural data for Bathyraja Pacifica is currently being reviewed.
🦐 Diet
🥚 Reproduction
🌍 Habitat & Distribution
Marine; bathydemersal; depth range 1760 - 1789 m . Deep-water Southwest Pacific: New Zealand.
🌿 Ecology
📐 Morphometrics
🌡️ Water Parameters & Tolerance
🛡️ Conservation Assessment
📊 Population Risk & Fisheries
🔍 Similar Species
👥 Community & Contribute
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