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Summary for Melanolagus bericoides Larvae
Bigscale deepsea smelt

Melanolagus  bericoides  (Borodin, 1929)
Family:	Bathylagidae (Deep-sea smelts)
Order:	Osmeriformes
Class:	Actinopterygii (ray-finned fishes)
English name:	Bigscale deepsea smelt
Distribution:	Atlantic, Indian and Pacific: widely distributed in tropical and subtropical waters. Eastern Pacific: California Current region (Ref. 35604).
Adult biology:	Mesopelagic, perhaps with diel migration (Ref. 58302). Usually caught singly, but also in small aggregations (Ref. 6345). Feed on plankton (Ref. 6345). Oviparous, with planktonic eggs and larvae (Ref. 35604). Minimum depth from Ref. 58018.
Diagnosis:	Extremely long eye stalks, about 50% HL in preflexion stage, maximum of about 70% at flexion stage; sparse pigmentation, limited to gut region; extremely long gut, especially in postflexion stage; differs from Atlantic larvae of the same species in having relatively longer eye stalks and in brain shape (width of optic lobe region slightly greater than length, versus width equals 80% of its length in Atlantic larvae); differs from B. longirostris in having less pigment and relatively longer eye stalks. Pigmentation: Preflexion-postflexion: lateral to liver; dorsally on terminal section of gut; series up to 11 along lateral gut surface; in some late postflexion larvae; on lower jaw, isthmus, opercle, pectoral fin base, and lateral region of caudal peduncle. Sequence of fin development: caudal, anal, dorsal and pectorals and pelvics. See also LARVAE table.
Climate Zone:	deep-water; 71°N - 58°S
Main Ref:	Moser, H.G. and E.H. Ahlstrom. 1996. (Ref. 35604)
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	Modified: Luna, Susan M.	Entered: Froese, Rainer

	Ref.:				Glossary
		(e.g. 9948)				(e.g. urostyle)

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Page created by Eli 09.11.99, last modified by Eli 04.03.05.