Halosaur fishes (Notacanthiformes: Halosauridae) from Atlantic Spanish waters according to integrative taxonomy Author Bañón, Rafael Author Arronte, Juan Carlos Author Armesto, Ángeles Author Barros-García, David Author Carlos, Alejandro De text Zootaxa 2016 4184 3 471 490 journal article 10.11646/zootaxa.4184.3.3 eb376937-2589-41d3-9cc6-b06c763af937 1175-5326 165028 7139E416-F8B1-4769-9EE7-D92FC28AADA1 Aldrovandia affinis (Günther, 1877) Fig. 5. Halosaurus affinis, Günther 1877: 444 . South of Japan, 34°N, 138°E, Challenger station 235, depth 565 fathoms. Syntypes: BMNH 1887.12.7.244-245 (2). McDowell 1973 : 91 –101 (description, key); Maul 1976 : 22 (description); Filatova 1985 : 27 –29 (description), 33–34 (key); Sulak 1986a : 593 –598 (description, key); Mceachran & Fechhelm 1998 : 210 –215 (description, key); Smith 2003 (key). FIGURE 3 Halosaurus ovenii from the northeastern Atlantic Ocean, MHNUSC 25010-2, 578 mm total length. FIGURE. 4 Halosaurus johnsonianus from the northeastern Atlantic Ocean, MHNUSC 25013- 2, 404 mm total length. Material examined . MHNUSC 25011- 1, 423 mm TL, 7th August 2011 , Galicia Bank ; 42º56.172'N— 11º55.816'W ; 1,545 m depth; MHNUSC 25011- 2, 486 mm TL, 7th August 2011 , Galicia Bank ; 42º41.771'N— 11º33.647; 1,477 m depth; MHNUSC 25011- 3, 442 mm TL, 2th August 2011 , Galicia Bank ; 42º56.172'N—11º55.816; 1,545 m depth. Description. Body shape eel-like, moderately compressed, elongated and attenuated to the caudal peduncle; top of snout and head scaleless, opercle scaleless; the preoral portion of the snout is long, contained 2–2.2 times in the snout length; first ray of dorsal fin very short and spine-like; pectoral fin short and fairly broad, falling well short of origin of ventral fin; dorsal fin origin slightly posterior to pelvic fin origin; palatine tooth patch joined at midline; pyloric caeca black and vent white. The main morphometric and meristic characteristics are presented in Table 6 . TABLE 6. Comparison of morphometric, meristic data and respective body proportions for specimens of Aldrovandia affinis .

Aldrovandia affinis Total Length (mm) Preanal length (mm) Gnathoproctal length (mm)	MHNUSC 25011 (1–3) 423–486 165–186 146–163	McDowell, 1973 — — —	Paulin& Moreland, 1979 — — —	Filatova, 1985 — — —	Hsin–Ming et al. , 2006 — — —
As % GPL Head length Eye diameter	32.7–35.6 3.1–4.1	— —	— —	— —	— —
Preorbital length Postorbital length Interorbital length	13.7–16 14.8–17.8 3.7–4.1	— — —	— — —	— — —	— — —
Preoral snout length Predorsal length Dorsal base length	6.2–8 74.8–76 10.4–11	— — —	— — —	— — —	— — —
Pectoral length Prepelvic length Pelvic length	18.4–18.5 69.2–71.2 10.4–13	— — —	— — —	— — —	— — —
Body depth Meristic features Dorsal fin rays	11.6–15.4 I+11	— 11–13	— 12	— 10–12	— 10–12
Ventral fin rays Pectoral fin rays SLL to anus	I+8 I+13 26–27	7–9 11–14 —	9 13 —	8 12 —	8–9 — 18–20
SLL to pelvic origin Scales above lateral line Branchiostegal rays	13–15 11–15 10	13–17 13–16 —	18 11 10	12–14 10–12 10	— — 10–11
Gill rakers Pyloric caeca	3+1+9–11 8–9	— —	— 9	12–16 6–9	14–16 —

Habitat and distribution . Benthopelagic on the middle and lower slope ( 700–2,200 m ), occurring primarily above the 4° C isotherm. Circumglobal at tropical and temperate latitudes. Eastern Atlantic, from Gulf of Biscay , Madeira to western Sahara , off South Africa ; western Atlantic , from New England to Florida, Gulf of Mexico , off the Caribbean islands and South America ; Indo-Pacific, in Zanzibar, Maldives, Taiwan , Japan , and eastern central Pacific ( Froese & Sampang 2004 ; Yeh et al . 2006 ). FIGURE. 5 Aldrovandia affinis from the northeastern Atlantic Ocean, MHNUSC 25011- 2, 486 mm total length.