Gigantactis microdontis Bertelsen, Pietsch, and Lavenberg 1981
- Dataset
- First Record of the Ceratioid Anglerfish Species Gigantactis microdontis (Teleostei: Lophiiformes: Gigantactinidae) in the Western Pacific Ocean
- Rank
- SPECIES
Classification
- kingdom
- Animalia
- phylum
- Chordata
- class
- Actinopterygii
- order
- Lophiiformes
- family
- Gigantactinidae
- genus
- Gigantactis
- species
- Gigantactis microdontis
description
Description. Illicium without lateral filaments, nearly cylindrical throughout length; escal bulb (Fig. 1 B) clubshaped, without dermal spinules, pigmented only near base and on distal part of short distal prolongation; distal patch of pigment oblong in shape, tapering posteriorly towards pore of photophore; 13 unpigmented stalked filaments, arising from distal surface of bulb just inside edge of distal pigment patch in two nearly parallel, lateral series that meet anteriorly; escal filaments short, length approximately equal to diameter of bulb, spatulate and compressed distally. Dorsal-fin rays 5, anal-fin rays 5, pectoral-fin rays 16, caudal-fin rays 9, free nearly to base. Number of premaxillary teeth 20; number of dentary teeth 31. Measurements in percent of SL: illicial length 245.5, length of esca (excluding distal filaments) 6.4, caudal peduncle length 32.7, longest caudal-fin rays (second and seventh) 37.3, longest dentary and premaxillary tooth 0.7 and 0.9, respectively. Remarks. Parin et al. (1977: 156) measured SL of 107 mm for this specimen; however, we measured 110 mm from the tip of the pterygiophore of the illicium to the posteriormost margin of the hypural plate. It may reflect a different scheme of measurements.
materials_examined
Material. IOM 3596, female (Fig. 1 A), 110 mm SL, western tropical Pacific Ocean, 7 ° 57 ’ N, 135 ° 53 ’ E, Isaacs-Kidd midwater trawl no. 87, fished open between 0 – 1000 m, 3300 m wire out, 5: 42 – 6: 42 hours, R / V Vityaz, cruise 57, station 7297, sample no. 199, 29 March 1975.