Redspotfin dwarfgoby (Eviota rubriguttata) is a ray-finned fish of the family Gobiidae. It inhabits marine (saltwater) waters in reef-associated environments. This species can reach a maximum total length of 1.3 cm. It occurs at depths between 6 and 9 metres. With a trophic level of 3, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Least Concern on the IUCN Red List.
Dorsal spines (total): 7; Dorsal soft rays (total): 8; Anal spines: 7. This species is distinguished from its congeners by the following set of characters: cephalic sensory-pore system pattern group1 (complete); dorsal/anal fin-ray formula 8/7; pectoral-fin rays branched; anterior spines of first dorsal fin not elongated; female genital papilla non-fimbriate; no 5th pelvic-fin ray; body relatively deep, 25% SL; occipital spot or spots on pectoral-fin base absent; internal blotch over ural centrum above midline, faint when preserved; both dorsal fins and anal fin with small, distinct, round red spots when fresh; when fresh and preserved, sides and belly peppered with tiny black chromatophores .: fusiform / normal; Cross section: oval.
Behavioural data for Redspotfin dwarfgoby is currently being reviewed.
Marine; reef-associated; depth range 6 - 9 m . Subtropical Northwest Pacific: Japan, Ryukyu Is.
The following diseases are known to affect Redspotfin dwarfgoby.
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