Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Petromyzonti (lampreys) > Petromyzontiformes
(Lampreys) > Petromyzontidae
(Northern lampreys) > Lampetrinae
Etymology: Caspiomyzon: Composed from Caspian sea + Greek,myzo = to suckle (Ref. 45335); hellenicus: The specific epithet refers to Greece as the species' present distribution.
Environment: milieu / climate zone / depth range / distribution range
Freshwater; demersal; potamodromous; depth range 0 - 1 m (Ref. 12282). Temperate; 42°N - 40°N, 23°E - 25°E (Ref. 59043)
Europe: Endemic to Greece. Known from three creeks in the Struma drainage.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 18.9 cm TL male/unsexed; (Ref. 89241); max. published weight: 7.40 g (Ref. 12282)
Morphology | Morphometrics
soft rays: 0. Adults: 9.55-15.85 cm TL. Body proportions, as percentage of TL (based on 66 specimens measuring 9.55-15.85 cm TL): prebranchial length, 8.4-13.1; branchial length, 9.5-12.4; trunk length, 46.4-54.7; tail length, 26.2-33.0; cloacal slit length, 0.6-2.0; eye length, 1.3-2.1; disc length, 2.9-7.3; prenostril length, 3.6-7.3; snout length, 4.4-8.9; postocular length, 2.3-3.8. The intestinal diameter, <0.05- 0.10 cm. The urogenital papilla length, as a percentage of branchial length, in eight spawning males measuring 9.6-13.3 cm TL, 3.3-9.1. Trunk myomeres, 53-63. Dentition: All labial teeth are pavement-like; supraoral lamina, 2 teeth, usually unicuspid, but one or both may be bicuspid; infraoral lamina, 7-11 teeth; typically 3 endolateral teeth on each side, but 4 teeth also occur (6 cases out of 96); endolateral formula, typically 2-2-2, but variant formulae occur in 25% of cases and each of the teeth can be either uni-, bi-, or tricuspid; 3-4 rows of anterials; first row of anterials, 4-8 teeth; 2-6 rows of exolaterals on each side; 1-4 rows of posterials; first row of posterials, 10-15 teeth; transverse lingual lamina with a greatly enlarged median tooth but no lateral teeth; longitudinal lingual laminae without teeth. Additonally, 9 of 66 adults possessed 1-2 accessory unicuspid teeth inside the ring formed by the supraoral and infraoral laminae and the endolateral teeth. Velar tentacles, 2-5. Body coloration (preserved) in mature adults is gray on the upper surface and flanks and light brown on the lower surface. Lateral line neuromasts unpigmented. Caudal fin pigmentation, + (2% of specimens), ++ (19%) or +++ (79%). Caudal fin shape, rounded (Ref.89241). Gray to black color of the caudal fins (Ref. 59043).
A short-lived, freshwater lamprey which lives in shallow, clear, fairly fast-flowing brooks with gravelly substrate, some rocks and aquatic plants (Ref. 26100). Adults are found at depths of 25-75 cm, in mud, especially among the roots of aquatic vegetation (Ref. 89241). They are filter feeders on microorganisms, including green algae (Ref. 26100). Adults are nonparasitic and believed to live for only 3-4 months. Spawning takes place in December up to May. Ammocoetes larvae live in detritus-rich sands and clay sediments (Ref. 59043). Metamorphosis takes place in December (Ref. 26100); between October and January in the Strymon and Loúros River Basins, Greece (Ref. 89241). Pollution and water obstruction are considered threats to the population (Ref. 26100).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Renaud, C.B., 1986. Eudontomyzon hellenicus Vladykov, Renaud, Kott, and Economidis, 1982. p. 186-195. In J. Holcík (ed.) The freshwater fishes of Europe. Petromyzontiformes. (Ref. 12282)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: of no interest
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.6250 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00117 (0.00051 - 0.00272), b=3.00 (2.80 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.37 se; based on food items.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (tmax=tm).
Vulnerability (Ref. 59153
): Moderate vulnerability (38 of 100) .