Classificazione / Nomi
Nomi Comuni | Sinonimi | Catalog of Fishes(Genere, Specie) | ITIS | CoL | WoRMS | Cloffa
>
Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobionellinae
Etymology: Rhinogobius: Greek, rhinos = nose + Latin, gobius = gudgeon (Ref. 45335); biwaensis: Named for its type locality, Lake Biwa.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
; acqua dolce benthopelagico, usually 10 - 30 m (Ref. 114784). Temperate
Asia: Japan.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 4.3 cm SL maschio/sesso non determinato; (Ref. 114784); 3.3 cm SL (female)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
Spine dorsali (totale) : 7; Raggi dorsali molli (totale) : 7 - 9; Spine anali: 1; Raggi anali molli: 8 - 9; Vertebre: 25 - 27. This species is distinguished by the following characters: 26 (rarely 27) vertebrae; 18-22 (mostly 20-21) pectoral fin rays; 31-36 (usually 31-34, mode 32) longitudinal scales; absent or few predorsal scales; D1 low with non-filamentous spines, all almost of the same length except for shorter first and sixth or last spines in both sexes; pelvic disk with thin membranes, its frenum undeveloped with low, thin lamella; no mark on cheek; back and sides of body with 5-6 unclear dark saddles and 6-9 dark blotches; D1 without blotches but melanized to greater or lesser degree along the rays; dorsal edge of pectoral base with a small, dark spot tinged with blue metallic luster; breeding males yellow on suboperculum and branchiostegal region and on basal part of anal fin, blue on medial part of under jaw (Ref. 114784).
Body shape (shape guide): elongated; Cross section: oval.
Found in the lake mainly at 10-30 m, scarce in the mouths or lowest reaches of inflowing rivers, and in lagoons connected to Lake Biwa. From May to August, this species migrate to shallow water for spawning; all habitats are effectively lentic (Ref. 114784).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Takahashi, S. and T. Okazaki, 2017. Rhinogobius biwaensis, a new gobiid fish of the ‘‘yoshinobori’’ species complex, Rhinogobius spp., endemic to Lake Biwa, Japan. Ichthyol. Res. 2017 (Ref. 114784)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Pesca: di nessun interesse
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high]. |
|
Bayesian length-weight
|
a=0.00813 (0.00359 - 0.01840), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.2 ±0.4 se; based on size and trophs of closest relatives |
Resilienza (Fonte Biblio. 120179) |
Alto, tempo minimo di raddoppiamento della popolazione meno di 15 mesi (Preliminary K or Fecundity.). |
Vulnerabilità della pesca (Ref. 59153) |
Low vulnerability (11 of 100). 🛈 |