Biology:Ronquilus jordani
| Ronquilus jordani | |
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Not evaluated (IUCN 3.1)
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| Scientific classification | |
| Kingdom: | Animalia
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| Genus: | Ronquilus D. S. Jordan & Starks, 1895
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| Species: | R. jordani
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| Binomial name | |
| Ronquilus jordani (C. H. Gilbert, 1889)
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Ronquilus jordani, the Northern ronquil, is a species of ronquil native to the eastern Pacific Ocean from the Bering Sea to Monterey Bay, CA. Ronquilus jordani is found at depths of from 3 to 275 metres (9.8 to 902.2 ft). This species grows to a length of 20 centimetres (7.9 in) TL. This species is the only known member of its genus.[1]
Appearance
Ronquilus jordani are small, cylindrical ichthyoplankton with brown to gray head, and two yellow bands on cheek. The body is gray with dark spots near pale or pale-yellow fins. This species can be distinguished from other members of the Bathymaster family by its cheek scales and the absence of some features in the cephalic lateralis system.[2]
Habitat Preference
Adult Ronquilus jordani are primarily benthic (bottom-dwelling) along rocky continental shelf and upper slope waters of the north-eastern Pacific Ocean. However, larvae and juveniles are considered neustonic, and occupy waters closer to the surface. This is thought to be beneficial due to increased growth in the warmer surface water and reduced predation at shallower depth.[3] The life cycle and habitat preference of Ronquilus jordani is subject to ongoing research.
References
- ↑ Froese, Rainer and Pauly, Daniel, eds. (2013). "Ronquilus jordani" in FishBase. February 2013 version.
- ↑ Stevenson, Duane; Matarese, Ann (2005). "The ronquils: a review of the North Pacific fish family Bathymasteridae (Actinopterygii: Perciformes: Zoarcoidei)". Proceedings of the Biological Society of Washington 118 (2): 367-406.
- ↑ Doyle, Miriam (1992). "NEUSTONIC ICHTHYOPLANKTON IN THE NORTHERN REGION OF THE CALIFORNIA CURRENT ECOSYSTEM". California Cooperative Oceanic Fisheries Investigations 33: 141-161.
Wikidata ☰ Q556627 entry
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