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Cypriniformes (Carps) >
Leuciscidae (Minnows) > Plagopterinae
Etymology: Margariscus: Greek, margariskos = pearl (Ref. 45335).
Eponymy: These are not eponyms but relate to the meanings of ‘margarita’; pearl and daisy. The dragonfish was so-named due to having a “pearl-colored spot above the maxilla”. (Ref. 128868), visit book page.
More on author: Cope.
Περιβάλλον: περιβάλλον / κλιματική ζώνη / εύρος βάθους / εύρος διανομής
Οικολογία
; Γλυκού νερού βενθικό(ς); μη μεταναστευτικό(ά) (Ref. 126106). Temperate; 45°N - 37°N
North America: Atlantic Slope of USA from Hudson River drainage in Vermont and New York, south to Potomac River drainage in Virginia; upper Ohio River drainages in south New York to West Virginia (Ref. 86798); Canada from British Columbia to Newfoundland and Nova Scotia (Ref. 52559), Northwest Territories, and Yukon Territory (Ref. 119194).
Μήκος κατά την πρώτη ωρίμανση / Μέγεθος / Βάρος / Ηλικία
Γεννητική Ωρίμανση: Lm 9.4  range ? - ? cm
Max length : 16.0 cm TL αρσενικό/απροσδιόριστο; (Ref. 86798); common length : 9.3 cm TL αρσενικό/απροσδιόριστο; (Ref. 12193); μεγ. αναφερόμενη ηλικία: 4 έτη (Ref. 12193)
Margariscus margarita is almost identical to Margariscus nachtriebi but can be distinguished from this species by having larger scales and usually 50-62 lateral scales (Ref. 86798).
Body shape (shape guide): elongated.
Adults inhabit pools of upland creeks and small rivers, and also ponds and lakes. Usually found over sand or gravel (Ref. 86798). They feed on copepods, cladocerans, chironomids, beetles, filamentous algae, and Chara (Ref. 1998). Spawning occurs in spring (Ref. 1998).
Spawning occurs in shallow rivers with moderate current, on sand or gravel. Males maintained territories 20.3 cm wide (at least 1.83 m apart from each other). A ripe female is driven onto the territory. The male places his pectoral fin beneath the female's body anteriorly, and his caudal fin placed over the caudal peduncle of the female. The pair vibrates and the eggs are deposited. Females spawn with different males.
Page, L.M. and B.M. Burr, 2011. A field guide to freshwater fishes of North America north of Mexico. Boston : Houghton Mifflin Harcourt, 663p. (Ref. 86798)
Κατάσταση Κόκκινου Καταλόγου IUCN (Ref. 130435: Version 2025-2 (Global))
Απειλή για τον άνθρωπο
Harmless
Ανθρώπινες χρήσεις
δόλωμα: occasionally
Εργαλεία
Ειδικές εκθέσεις
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Διαδικτυακές πηγές
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Δείκτης φυλογενετικής ποικιλότητας (Αναφ.
82804): PD
50 = 0.7500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00617 (0.00251 - 0.01514), b=3.05 (2.83 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref.
93245).
Τροφικό Επίπεδο (Αναφ.
69278): 3.1 ±0.36 se; based on food items.
Ελαστικότητα (Αναφ.
120179): Μεσαίο(α), ελάχιστος χρόνος για διπλασιασμό πληθυσμού 1,4 - 4,4 έτη (tm=4).
Ευπάθεια στην αλιεία (Ref.
59153): Low vulnerability (10 of 100).
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Θρεπτικά συστατικά (Ref.
124155): Calcium = 126 [67, 239] mg/100g; Iron = 0.678 [0.382, 1.287] mg/100g; Protein = 17.5 [16.4, 18.6] %; Omega3 = 0.945 [0.399, 2.263] g/100g; Selenium = 11.4 [4.4, 33.9] μg/100g; VitaminA = 64.5 [20.0, 210.9] μg/100g; Zinc = 1.19 [0.76, 1.75] mg/100g (wet weight);