RMB5WF5F–Sternoptyx diaphana, family Sternoptychidae deep sea fishes Stomiiformes deep sea hatchetfishes
RMBCXRA0–gasteropelecus sternicla / common hatchetfish / silver hatchetfish
RMRGEPJR–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 11. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMDAJM7Y–pygmy hatchetfish (Carnegiella myersi), at the water surface
RMRGEP6Y–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 19. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMCNY6MC–marbled hatchetfish (Carnegiella strigata), little shoal
RMDAJM3Y–pygmy hatchetfish (Carnegiella myersi), at the wate rsurface
RMGDDD9J–RIVER OR COMMON HATCHETFISH gasteropelecus sternicla
RMGDDCY9–Fishes in Fresh Water Aquarium
RMRGEN4N–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baud 69. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMDAJM3H–pygmy hatchetfish (Carnegiella myersi), at the water surface
RMCNYD51–spotted hatchetfish (Gasteropelecus maculatus), fish among water plants
RMRGDRAX–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes Baird 85. f ^. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMADA7JD–spotted hatchetfish (Gasteropelecus maculatus), swimming in front of water plants, Suriname
RMRGENNK–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baud 35. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGDR8X–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes ⢠Baird 87. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGEPAC–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 15 SBQ. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGENK6–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes Baird 37 D E P H. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGEP4J–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes ⢠Baud 25. 1 ' ' V â 1 , V. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGEN86–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 61. CN o ^0 u s O). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGENDP–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 47. s o E E >^ i (U c o o I. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGENGY–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baud 39. E E O u < X U D 0) a. o CN. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGEP80–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 17 6 . o CM Jf%, CN CN CO X o ^0 U , o. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGENB8–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 53. D c -Q E o 0) o u "o -^ 'o 5 o X. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGDR64–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 93. CN O ^0 CO O P if o o LU o > c Q. O 0). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGEN0X–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 77. 75 JQ E o a U o c o -c a o c O o X. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGDR5F–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 95. CO o < X I— < 0£ a D- ? .a o a. CN tN.. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGENE8–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 45. o Q E o CD O U < E o E 'a c o O X. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGEN6D–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes ⢠Baird 65. E E o O If) o CO CO (U u X O X J) "S Q. O O) N. â ^ 3. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGEN3D–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes ⢠Boird 71. <u a a -a J2 E o o u J3 O â D o o O -O o 3 o X. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGEPDX–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 13 from Maurolicus through Polyipmts to Argyropelectis. In Polyipmis, the inter- opercle is similar in shape to Maurolicus, but somewhat less broad. The preopercle has developed a ventral spine. A reduction in the anterior process of the interopercle, which now covers only the posterior ven- tral margin of the preopercle, may be observed in ArgyropeJecus. The pre- opercle, while similar in form to Polyipmis, has a lateral spine in addition to the ven- tral. Sternoptyx is somewhat indepen-
RMRGDR3Y–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 101. Figure 77. Polyipnus matsubarai; after Schultz, 1961. reaches midline; lateral border of dark- dorsal pigment straight from dorsal spine to caudal peduncle; dark pigment spots mark lateral midHne, pigment striations present on trunk. Distribution (Fig. 63). Restricted to the western North Atlantic; abundant in the Caribbean and Gulf of Mexico from the coast of Venezuela to the straits of Florida; occurs off the outer islands of the West Indies and less abundantly along the east coast
RMRGENXB–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baiid 31. Figure 18. Photophore characteristics: genus Sternoptyx. Abbreviations: see p. 6. bladder present (see above for osteological description). Genus ArgyropeJecus Cocco, 1829 Argijropelecus Cocco, 1829: 146 (type species: ArgyropeJecus hemigijmnus Cocco, 1829, bv monotypy). Fleurothysls Lowe, 1843: 64 (type species: Sterno- ptyx olfersi Ciivier, 1843, by original designa- tion ). Sternoptychides Ogill^y, 1888: 1313 (type spe- cies: Sternoptychides amahUis Ogilby, 1888, by monotypy). Diapi
RMRGEPKX–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 9 ized by a modification of the first neural spine into a short triangulate, vertical blade. The second neural spine often sup- ports the first. In marked contrast, the gonostomatid genera examined (also Vin- ciguerria, see Weitzman, 1967b) show little modification in this area, and the first neural spine is elongate and forms an integral part of the upper caudal lobe. Stemoptyx shows a high degree of special- ization with considerable reduction or fusion of elements. Fohjipnus shares with
RMRGDR4G–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 99. Figure 75. Polyipnus polli; after Norman, 1930. bar reaching toard midline; ventral border of dorsal pigment in straight line, from lateral photophore to caudal pe- duncle; dark pigment spots on midline and between midline and border of darker dorsal pigment; pigment striations present on trunk. Distribution (Fig. 63). Restricted to the southeastern Atlantic along the west African coast from the Gulf of Guinea to 10°S latitude. Polyipnus asteroides Schultz Figure 76 Polyipnus asteroi
RMRGENCK–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 51. Figure 33. Geographic variation in gill raker number in A. hemigymnus, pigment forms A and B. A =: NE Atlantic; B = NW Atlantic; C = Gulf of Mexico; D = Mediterranean; E = Indian Ocean; F = Soutfiern Ocean (Pacific); G = N Pacific; H =: Pacific (California). Numbers refer to sample size. of about 35°N along the North African coast and associated islands; essentially absent from the tropical Atlantic; small to moderate catches in the southwestern At- lantic represent this species; taken
RMRGDRDF–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baud 81. 30 SL so Figure 62. Regression of lower jaw length (JL) on standard length (SL) in S. diaphana (A) and S. pseudobscura (B) from the Tropical Atlantic. ridged folds; die posterior section diin walled and extensible, six to ten pyloric caecae, short straight intestine, and a rel- atively large well-developed liver. Gonads, when mature, lie horizontally and laterally in the body cavity; cavity lined with pig- mented membrane; nepliritic tissue is not as well developed as in other genera. S
RMRGENER–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes ⢠Baird 43. â igure 28. Argyropelecus hemlgymnus; R/V CHAIN, Cruise 60; Station 1299; SL 30 mm. 604; Handrick, 1901: system, light organs); 1 (anatomy, nervous Collett, 1903: 108; Ledenfeld, 1905: 170 (light organs); Braner, Regan, 1908: 218; (lai^vae, fig.); Ziig- and Byrne, 1913: 21 1906: 106 (larvae, fig.) Ehrenbaum, 1909: 357 mayer, 1911: 52; Holt (larvae, fig.); Jespersen, 1915: 6; Jespersen and Taning, 1919: 220 (lai-vae, eye muscles): Nusbaum-Hilarowicz, 1923: 10 (anatomy): Barnard, 1925:
RMRGEN1Y–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes ⢠Baird 75. -r- 6 âIâ 8 -igure 56. Geographic variation in gill raker count in j. pseudobscura. A ^ Caribbean; B =: N Central Pacific; Z ;= Indian Ocean; D := Marshall Islands. Numbers refer o sample size. Sternoptyx diaphana Hermann Figure 58 Sternoptyx diaphana Hermann, 1781: 33. In accordance with article 75a(i) Int. Code Zool. Nomen., a neot>'pe is hereby designated: Neo- type MCZ 46402; 11° 06'N, 78° 2rW; 8/7/66; R/V ANTON BRUUN, Cruise 19; Station 813. Cuvier and Valenciennes, 1849: 41
RMRGDR7K–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baud 89. igure 66. Po/yipnus sp/nosus; modified from Gijnther, 1887. (p. (S6); differs from P. spinosus in its onger basal post-temporal spines; shorter oreopercle spine; more raised first supra- ibdominal photophore, somewhat shorter 30st-temporal spine in relation to its base- :o-dorsal spine length, and higher gill •aker count. Description. D. 13-14; A. 15-17; P. 13- L5; total gill rakers (23) 24-28; vertebrae 33-34. Medium to large species, seldom ex- ceeding 70 mm SL; trunk broadly tapering
RMRGDR2J–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 113. CD O CN E "5 Q. n (It LO -13 CN "D (U £ XI n a) 1— c -n n o c X o (1> O) 01 <u *- u t/i c H C2 n o ^ o o o E o M o o "^ V CO n (U E. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original work.. Harvard University. Museum of Comparative Zoology. Cambridge, Mass. : The Museum
RMRGENA0–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baird 57 45 15-. 20 BO S L Figure 39. Geographic variation in the regression of body depth (BD) on standard length (SL) in A. aculeatus. A NW Atlantic; B = Gulf of Mexico; C = NE Atlantic; D = Caribbean; E = Pacific (Chile). Marr, 1948: 140; Misra, 1952: 367; Haig, 1955: 321; Fowler, 1956: 27; Koefoed, 1961: 1. rgtiropdecus olfersi: Barnard, 1925: 153; Smith, 1957: 37 (?); Bright and Paquegnat, 1969: -29. Argtjropelccus Itjchntis hjchnus Schultz, 1961: 587 (in part); 1964: 241;" Blache,
RMRGENFP–. Bulletin of the Museum of Comparative Zoology at Harvard College. Zoology. Marine Hatchetfishes • Baud 41. N Zoo 400 • 600 < Oir 0 • • 800 0 looo • ISoo «* aO B • D • 10 20 30 FISH H R Figure 26. Diurnal vertical distribution of A. gigas determined by rate of capture with depth during the day (D) and night (N). A z= Pacific (Chile); B = Gulf of Gulnear C = Gulf of Mexico; D = NE Atlantic. Argtjropeleciis affinis: Jespersen, 1915: 6; Roule and Angel, 1933: 46- Bnen, 1935: 52; Nybelin, 1948: 23; Dollfus, 1955: 1. Species distinction. See A. affinis (p. 34). Description. D. 9 (10); A. 12-13;
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