| Petromyzontidae (Northern lampreys), subfamily: Lampetrinae |
| 14.05 cm TL (male/unsexed) |
|
demersal; freshwater; brackish; marine, anadromous |
| Asia: southern coast of the Black Sea. |
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Description: Adults: 11.5-14.05 cm TL. Body proportions, as percentage of TL (based on the holotype and two paratypes measuring 11.5-13.7 cm TL or on a single paratype 12.4 cm TL; if the latter case then a single value is given): prebranchial length, 11.1-11.7; branchial length, 10.2-10.9; trunk length, 46.7-51.6; tail length, 29.0; eye length, 2.0-2.3; disc length, 5.2. Urogenital papilla length, as a percentage of branchial length, in spawning males, undetermined. Trunk myomeres, 58-64. Dentition: supraoral lamina, 2 unicuspid teeth; infraoral lamina, 5-6 unicuspid teeth; 3 endolaterals on each side; endolateral formula, typically 2-2-2; 1-2 rows of anterials; first row of anterials, 9 unicuspid teeth; exolaterals absent; posterials absent except for one very small cusp on the right side; transverse lingual lamina, one low but wide-based median cusp with no flanking lateral teeth; longitudinal lingual laminae condition undetermined. Velar tentacles, 5 with tubercles. The median tentacle is shorter than the lateral ones immediately next to it. Body coloration in mature individuals (preserved), dorsal and upper lateral aspects grayish brown, lower lateral and ventral aspects yellowish. Lateral line neuromasts unpigmented. Caudal fin pigmentation, absent or trace. Caudal fin shape, spade-like. Oral fimbriae, 124 (estimate based on number counted on right side times two because left side damaged). Oral papillae, about 23 (estimate based on number counted on right side times two because left side damaged). |
| Freshwater. The Iyidere River, Turkey is 5 m above sea level. Ammocoetes are found in a mixture of coarse sand and organic detritus near the river banks overgrown by riparian vegetation. Adults nonparasitic. Spawning was observed over a rocky substrate on 20 April (2011, year of publication of this reference?) at 200 m upstream of the mouth of the Iyidere River, Turkey. The water depth was 0.3 m and the stream width was 1.5 m (Ref. 89241). |
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Endangered (EN); Date assessed: 18 March 2013 (B2ab(i,ii,iii,iv)) Ref. (130435)
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| harmless |
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Recorded from Black Sea watersheds (Ref. 106151). Type locality: Iyidere R., Trabzon (Ref. 12284). Also Ref. 89241. "nEurTurk". |
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