''Stiphodon multisquamus'' is a

species A species () is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. It is the basic unit of Taxonomy (biology), ...

amphidromous Fish migration is mass relocation by fish from one area or body of water to another. Many types of fish migrate on a regular basis, on time scales ranging from daily to annually or longer, and over distances ranging from a few metres to thousa ...

freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mi ...

goby The Gobioidei are a suborder of percomorph fish. Many of these fishes are called gobies. It is by far the largest and most diverse order within the order Gobiiformes, and one of the most diverse groups of ray-finned fish in general. The subord ...

found in

Da Nang Da Nang or DanangSee also Danang Dragons (, ) is the fifth-largest city in Vietnam by municipal population. It lies on the coast of the Western Pacific Ocean of Vietnam at the mouth of the Hàn River, and is one of Vietnam's most important p ...

Guangdong ) means "wide" or "vast", and has been associated with the region since the creation of Guang Prefecture in AD 226. The name "''Guang''" ultimately came from Guangxin ( zh, labels=no, first=t, t= , s=广信), an outpost established in Han dynasty ...

, southern

Hainan Hainan is an island provinces of China, province and the southernmost province of China. It consists of the eponymous Hainan Island and various smaller islands in the South China Sea under the province's administration. The name literally mean ...

Okinawa Island , officially , is the largest of the Okinawa Islands and the Ryukyu Islands, Ryukyu (''Nansei'') Islands of Japan in the Kyushu region. It is the smallest and least populated of the five Japanese archipelago, main islands of Japan. The island is ...

and

Pulau Tioman Tioman Island () is , off the east coast of Peninsular Malaysia, more specifically off the east coast of Rompin District, Pahang, Malaysia. It is long and wide and has seven villages, the largest and most populous being Kampung Tekek on the c ...

. This species can reach a length of SL represent the largest known members of the genus.Maeda, K., Tran, Hau Duc & Tan, H.H. (2015): Discovery of a substantial continental population of the subfamily Sicydiinae (Gobioidei: Gobiidae) from Vietnam: Taxonomic revision of the genus ''Stiphodon'' from the western South China Sea. ''Raffles Bulletin of Zoology, 63: 246–258.'' Colour of live

male Male (Planet symbols, symbol: ♂) is the sex of an organism that produces the gamete (sex cell) known as sperm, which fuses with the larger female gamete, or Egg cell, ovum, in the process of fertilisation. A male organism cannot sexual repro ...

s variable. Body and fin markings similar to those of preserved specimens, but background

yellow Yellow is the color between green and orange on the spectrum of light. It is evoked by light with a dominant wavelength of roughly 575585 nm. It is a primary color in subtractive color systems, used in painting or color printing. In t ...

ish

grey Grey (more frequent in British English) or gray (more frequent in American English) is an intermediate color between black and white. It is a neutral or achromatic color, meaning that it has no chroma. It is the color of a cloud-covered s ...

to purplish; lateral sides of head yellowish grey to grey, often bluish. The female is more sombrely marked and is less easy to identify.

References

multisquamus Fish described in 1986 {{Oxudercidae-stub