''Dichotomyctere kretamensis'' is a

species In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...

freshwater Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include ...

pufferfish Tetraodontidae is a family of primarily marine and estuarine fish of the order Tetraodontiformes. The family includes many familiar species variously called pufferfish, puffers, balloonfish, blowfish, blowies, bubblefish, globefish, swellfis ...

known only from northern

Borneo Borneo (; id, Kalimantan) is the third-largest island in the world and the largest in Asia. At the geographic centre of Maritime Southeast Asia, in relation to major Indonesian islands, it is located north of Java, west of Sulawesi, and eas ...

Discovery

The

type specimen In biology, a type is a particular wiktionary:en:specimen, specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to a ...

of this species was deposited at the

Field Museum The Field Museum of Natural History (FMNH), also known as The Field Museum, is a natural history museum in Chicago, Illinois, and is one of the largest such museums in the world. The museum is popular for the size and quality of its educational ...

(Specimen No.51558). It was collected on May 10, 1950 by

Robert F. Inger Robert Frederick Inger (September 10, 1920 – April 12, 2019) was an American herpetologist. During his lifetime, he wrote numerous books and publications about herpetology. He was also the curator for amphibians and reptiles at the Field Mus ...

from the Pinang River in the

Kinabatangan Kinabatangan ( ms, Pekan Kinabatangan) is the capital of the Kinabatangan District in the Sandakan Division of Sabah, Malaysia. Its population was estimated to be around 10,256 in 2010. Kinabatangan is mostly populated with the Orang Sungai ...

District of North

. Paratypes were also deposited at the Field Museum. They include specimen No. 51559 collected from the type locality, specimen No. 51562 collected from the Gaja River, specimen Nos. 51560-1 collected from the Kretam Kechil River and specimen no. 51563 from a tributary of the Gaja River.

Description

In life ''Dichotomyctere kretamensis'' is olive green in color dorsally and laterally with round and oblong spots of varying sizes. Most specimens exhibit a black occipital

chevron Chevron (often relating to V-shaped patterns) may refer to: Science and technology * Chevron (aerospace), sawtooth patterns on some jet engines * Chevron (anatomy), a bone * ''Eulithis testata'', a moth * Chevron (geology), a fold in rock lay ...

and a partially interrupted ventro-lateral black stripe running from the mouth below the eye and the

pectoral fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as ...

that fades as it extends back to the vent. The ventral surface otherwise is white. Fins are unmarked and the

caudal fin Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as se ...

(tail) is dusky. Based on the few specimens that have been measured, this fish has a maximum length of .

References

External links

Field Museum Fish Collection Database
with information on the specimens deposited at this museum {{Taxonbar, from=Q3759026 Tetraodontidae Fish described in 1953