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Gobiiformes (Gobies) >
Gobiidae (Gobies) > Gobionellinae
Etymology: Rhinogobius: Greek, rhinos = nose + Latin, gobius = gudgeon (Ref. 45335); yaima: Named for the type locality, Yaeyama Islands.
Meio ambiente: milieu / Zona climática / intervalo de profundidade / faixa de distribuição
Ecologia
; Água doce demersal. Subtropical
Asia: Japan, Ryukyu Is.
Tamanho / Peso / Idade
Maturidade: Lm ?  range ? - ? cm
Max length : 6.6 cm SL macho/indeterminado; (Ref. 123096); 5.0 cm SL (female)
Descrição suscinta
Chaves de identificação | Morfologia | Morfometria
Espinhos dorsais (total) : 7; Raios dorsais (total) : 7 - 9; Espinhos anais: 1; Raios anais : 7 - 8; Vértebras: 26. This species is distinguished from its congeners by the following characters: head depressed, its maximum depth 65.5-71.6% of its maximum width; the body and caudal peduncle elongate, their depths 13.8-14.5% SL, at anal fin origin and 11.4-12.2% SL, respectively; longitudinal scales 40-43; vertebrae 10 + 16 = 26; D1 VI, low in males, not extending posteriorly to origin of D2 when adpressed; fifth pelvic-fin segmented ray usually divided into 5 branches at its first (most proximal) segmenting point; naked pectoral-fin base and prepelvic area; belly with small cycloid scales except forthe narrow area around ventral midline; cheek with sensory-papillae rows arranged longitudinally, no transverse rows. Colouration: pectoral fin base with a distinct dull orange oval spot; temporal region with 2 orange stripes, reaching posteriorly to, or around, a vertical through origin of second dorsal fin; caudal fin of males with 4 vertical rows of bright orange dots, in females, a pair of vertically-arranged, rounded or rectangular black blotches at the base when alive or freshly collected (Ref. 123096).
Cross section: oval.
Occurs in the upper reaches of swift freshwater streams in montane areas of Ryukyu Is., Japan. It appears to be amphidromous, judging from small-sized eggs laid by the females at the spawning grounds in Urauchi-gawa River, Iriomote-jima I. (Ref. 123096).
Ciclo de vida ou comportamento de acasalamento
Maturidade | Reprodução | Desova | Ovos | Fecundidade | Larvas
Suzuki, T., N. Oseko, S. Kimura and K. Shibukawa, 2020. Two new species of torrential gobies of the Genus Rhinogobius from the Ryukyu Islands, Japan. Bull. Kanagawa Prefect. Mus. (Nat. Sci.) 49:7-28. (Ref. 123096)
Status na Lista Vermelha da UICN (Ref. 130435: Version 2025-2 (Global))
Ameaça para os humanos
Harmless
Uso pelos humanos
Pescarias: sem interesse
Ferramentas
Relatórios especiais
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Fontes da internet
Estimativas baseadas em modelos
Índice de diversidade filogenética (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00813 (0.00356 - 0.01856), b=3.08 (2.91 - 3.25), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Nível Trófico (Ref.
69278): 3.3 ±0.4 se; based on size and trophs of closest relatives
Resiliência (Ref.
120179): Elevada, tempo mínimo de duplicação da população menor que 15 meses (Preliminary K or Fecundity.).
Vulnerabilidade da pesca (Ref.
59153): Low vulnerability (10 of 100).
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