Notoliparis antonbruuni

description

Description. Counts: V> 59 (12 +? 47), P 29 (22 + 2 + 5), C 9 (4 / 4 + 1). Ratios: eye ³ 1.8 SL, disk-anus in disk> 1.3, disk in anus-A <1.8. Head badly damaged, unmeasurable. Eye tiny, lens almost as large as entire eyeball. Nostrils unknown. Premaxillary teeth long, slender, sharp, slightly recurved canines in about 28 oblique rows of up to 5 or 6 teeth each, forming a narrow band, up to 4 teeth wide at symphysis but almost uniserial posteriorly. Mandibular teeth similar in shape and arrangement, but in about 23 rows of up to 4 teeth each. Innermost teeth largest, outermost moderately large. Cephalic canals and pores and gill openings missing. Pectoral fin rays probably 29 (22 + 2 + 5), wider in notch but not clearly distinct from upper and lower lobes; rudimentary rays absent. Left pectoral girdle badly damaged, removed for clearing and staining; scapula broad, coracoid with well-developed shaft. Four large, round, poorly calcified radials present (1 + 1 + 1 + 1), dorsalmost largest, notches and foramina absent. Body relatively deep. Pleural ribs absent. Disk well-developed, only its skeleton remaining; estimated diameter without margin 1.3 distance from it to anus. Abdominal ve

Descriptions of four new species, redescription of Paraliparis membranaceus, and additional data on species of the fish family Liparidae (Pisces, Scorpaeniformes) from the west coast of South America and the Indian Ocean.

diagnosis

Diagnosis. A Notoliparis with 29 pectoral-fin rays, 59 or more vertebrae, eye 1.8 % SL or more, and anus less than disk diameter distant from disk.

Descriptions of four new species, redescription of Paraliparis membranaceus, and additional data on species of the fish family Liparidae (Pisces, Scorpaeniformes) from the west coast of South America and the Indian Ocean.

discussion

Remarks. Although this specimen clearly represents a previously unknown species, the extensive damage to it means it is impossible to determine its genus with certainty; it could be in Careproctus, Notoliparis, or Pseudoliparis. The specimen is so fragile that during clearing and staining, the pectoral girdle disintegrated, but not before the positions of the radials could be determined; Fig. 4 C shows the scapula, radials, and coracoid, in their correct (reconstructed) positions. In many respects it is similar to C. sandwichensis Andriashev and Stein 1998 from 5450 m in the South Sandwich Trench, but it is notably different in pectoral fin structure (two or three notch rays, widely separated, vs all rays equally spaced; all radials round vs “ rounded squares ”; dorsal radial (1) largest, others equal size vs 1 largest, gradually smaller ventrally), premaxillary tooth number and pattern (ca 28 vs. about 8 oblique rows), eye size (56 vs. 48 times in SL), caudal rays (9 rays, 1 + 4 / 4 vs. 11 1 + 5 / 3 + 2), and distance from anus to anal fin origin (ca. 9 vs. ca. 13 % SL). Both Notoliparis and Pseudoliparis are distinguished from other liparid genera particularly by the structure of

Descriptions of four new species, redescription of Paraliparis membranaceus, and additional data on species of the fish family Liparidae (Pisces, Scorpaeniformes) from the west coast of South America and the Indian Ocean.

distribution

Distribution. Known only from the single specimen taken at hadal depths off Callao, Peru.

Descriptions of four new species, redescription of Paraliparis membranaceus, and additional data on species of the fish family Liparidae (Pisces, Scorpaeniformes) from the west coast of South America and the Indian Ocean.