Nematops is a genus

Genus

In biology, a genus is a low-level taxonomic rank used in the biological classification of living and fossil organisms, which is an example of definition by genus and differentia...

 of fish in the Pleuronectidae

Pleuronectidae

Righteye flounders are a family, Pleuronectidae, of flounders. They are called "righteye flounders" because most species lie on the sea bottom on their left side, with both eyes on the right side. The Paralichthyidae are the opposite, with their eyes on the left side.Their dorsal and anal fins are...

 family, comprising four species distributed in the tropical

Tropics

The tropics is a region of the Earth surrounding the Equator. It is limited in latitude by the Tropic of Cancer in the northern hemisphere at approximately  N and the Tropic of Capricorn in the southern hemisphere at  S; these latitudes correspond to the axial tilt of the Earth...

 and subtropical

Subtropics

The subtropics are the geographical and climatical zone of the Earth immediately north and south of the tropical zone, which is bounded by the Tropic of Cancer and the Tropic of Capricorn, at latitudes 23.5°N and 23.5°S...

 waters of the Indo-West Pacific

Indo-West Pacific

The Indo-West Pacific, or IWP, is a zoogeographical region spanning the entire Indian Ocean including the Red Sea and the Pacific Ocean as far as the Caroline Islands but short of the Marshall Islands...

. Due to their small size (up to 10 centimetres (3.9 in)) and depth of habitation (up to 650 metres (2,132.5 ft)) few examples of this genus are caught, and as a result little is known of their morphology

Morphology (biology)

In biology, morphology is a branch of bioscience dealing with the study of the form and structure of organisms and their specific structural features....

 and distribution.

Species

• Narrow-body righteye flounder
  Narrow-body righteye flounder
  The narrow-body righteye flounder, Nematops macrochirus, is a flatfish of the family Pleuronectidae. It is a demersal fish that lives on saltwater bottoms at depths of between . Its natural habitat is the waters of the Indo-West Pacific, from the Bali Strait to Northern Territory, Queensland and...
  
  , Nematops macrochirus (Norman, 1931).
• Large-scale righteye flounder
  Large-scale righteye flounder
  The large-scale righteye flounder, Nematops grandisquama, is a flatfish of the family Pleuronectidae. It is a demersal fish that lives on saltwater bottoms at depths of between . Its natural habitat is the tropical waters of the Indo-West Pacific, from Bali to Indonesia and the southwest coast of...
  
  , Nematops grandisquama (Weber & de Beaufort, 1929).
• Small-mouth righteye flounder
  Small-mouth righteye flounder
  The small-mouth righteye flounder, Nematops microstoma, is a flatfish of the family Pleuronectidae. It is a demersal fish that lives on saltwater bottoms from depths of . Its natural habitat is the tropical waters of the southwest Pacific...
  
  , Nematops microstoma (Günther, 1880).
• Nematops nanosquama (Amaoka, Kawai & Seret, 2006).