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Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobionellinae
Etymology: Gymnogobius: Greek, gymnos = naked + Latin, gobius = gudgeon (Ref. 45335); opperiens: Name from Latin 'opperior' meaning to wait or expect, its present participle meaning 'waiting', alluding to it being recognized as new for more than 20 years and has long awaited formal description.
Περιβάλλον: περιβάλλον / κλιματική ζώνη / εύρος βάθους / εύρος διανομής
Οικολογία
Θαλασσινό(ά); Γλυκού νερού; Υφάλμυρο βενθικό(ς); αμφίδρομο (Ref. 58909). Temperate
Northwest Japan (NE and central Honshu and southern Hokkaido), Kuril Is. (Kunashir), southern Sakhalin, and southern Primorski Krai in Russian Far East.
Μέγεθος / Βάρος / Ηλικία
Γεννητική Ωρίμανση: Lm ?  range ? - ? cm
Max length : 8.1 cm SL αρσενικό/απροσδιόριστο; (Ref. 81467)
Σύντομη περιγραφή
Κλείδες προσδιορισμού | Μορφολογία | Μορφομετρία
Ραχιαίες άκανθες (συνολικά) : 6 - 7; Εδρικές άκανθες: 1; Μαλακές εδρικές ακτίνες: 9 - 12. This species is distinguished by the following characters: base of caudal fine with a dark, y-shaped blotch and when fresh white spots on the pectoral fin near its insertion; head broad and depressed, the width greater than its depth; anterior oculoscapular canals reaching beyond postorbital region, opening through paired C, D, F, and G pores; right and left D pores distinct, separated by less than 1/3 orbital diameter; several sensory papillae in row 'n'; anteriorly protruding lower jaw beyond the upper one; maxilla extending posteriorly to or beyond posterior margin of eye; posterolateral end of mental flap indistinct; no fleshy, barbel-like processes behind chin; body with a series of broad bands formed by dark pigment patches; dusky caudal fin with dark blotches forming distich bands; predorsal scales 19-26; longitudinal scale series 71-78; modal vertebral count 15 + 18; first dorsal fin often with 6 spines, anteriormost pterygiophore usually inserted in 4th interneural space; modal second dorsal fin ray I,11, anteriormost pterygiophore usually inserted in 11th interneural space; modal anal fin ray count I,11, origin anterior to 3rd soft ray or second dorsal; first dorsal fin with distinct oblique bands, a dark blotch on posterior margin (Ref. 81467).
Body shape (shape guide): fusiform / normal.
Often hidden among rocks in shallow, fast-moving, rock bottom streams and rivers. Collected in water temperatures exceeding 30°C (Ref. 81467).
Κύκλος ζωής και συμπεριφορά ζευγαρώματος
Γεννητική Ωρίμανση | Αναπαραγωγή | Γεννοβολία | Αβγά | Γονιμότητα | Προνύμφες
Stevenson, D.E., 2002. Systematics and distribution of fishes of the Asian goby genera Chaenogobius and Gymnogobius (Osteichthyes: Perciformes: Gobiidae), with the description of a new species. Spec. Divers. 7(3):251-312. (Ref. 81467)
Κατάσταση Κόκκινου Καταλόγου IUCN (Ref. 130435: Version 2025-2 (Global))
Απειλή για τον άνθρωπο
Harmless
Ανθρώπινες χρήσεις
Εργαλεία
Ειδικές εκθέσεις
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Διαδικτυακές πηγές
Εκτιμήσεις βάσει μοντέλων
Δείκτης φυλογενετικής ποικιλότητας (Αναφ. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.01000 (0.00442 - 0.02263), b=3.00 (2.81 - 3.19), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Τροφικό Επίπεδο (Αναφ. 69278) |
3.2 ±0.3 se; based on size and trophs of closest relatives |
Ελαστικότητα (Αναφ. 120179) |
Υψηλό, ελάχιστος χρόνος για διπλασιασμό πληθυσμού < 15 μήνες (Preliminary K or Fecundity.). |
Ευπάθεια στην αλιεία (Ref. 59153) |
Low vulnerability (19 of 100). 🛈 |