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Actinopterygii (ray-finned fishes) > Perciformes (Perch-likes) > Gobiidae (Gobies) > Gobionellinae
Etymology: Rhinogobius: Greek, rhinos = nose + Latin, gobius = gudgeon (Ref. 45335); biwaensis: Named for its type locality, Lake Biwa.

Environment / Climate / Range Ecology

Freshwater; pelagic-neritic, usually 10 - 30 m (Ref. 114784). Temperate, preferred ?

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Asia: Japan.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 4.3 cm SL male/unsexed; (Ref. 114784); 3.3 cm SL (female)

Short description Morphology | Morphometrics

Dorsal spines (total): 7; Dorsal soft rays (total): 7-9; Anal spines: 1; Anal soft rays: 8 - 9; Vertebrae: 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).

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).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

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)

IUCN Red List Status (Ref. 115185)

Not Evaluated

CITES (Ref. 94142)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO(Publication : search) | FisheriesWiki |

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Rhinogobius biwaensis Takahashi & Okazaki, 2017