Nemateleotris helfrichi
From Wikipedia, the free encyclopedia
| Nemateleotris helfrichi | |
|---|---|
 | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Gobiiformes |
| Family: | Gobiidae |
| Genus: | Nemateleotris |
| Species: | N. helfrichi |
| Binomial name | |
| Nemateleotris helfrichi J. E. Randall & G. R. Allen, 1973 | |
Nemateleotris helfrichi, Helfrich's Dartfish, is a species of dartfish native to the Pacific Ocean.
They are small fishes that grow to a maximum length of 6 centimetres (2.4 in).[2] They have bright yellow head with purple forehead with purple and white shades on body.[3] They have 7 dorsal spines 28-31 dorsal soft rays and 1 anal spine 26-28 anal soft rays.[4]
Distribution and habitat
They are present in the Pacific Ocean between latitudes 16°N and 28°S. Their range extends from Indonesia to Tuamotu Archipelago. They prefer deeper waters than other Nemateleotris. They are found swimming a few meters above the water bed. They are found at a depths between and are rarely found above 40 metres (130 ft).[4]
Diet
They are carnivorous. N. helfrichi mainly feed on zooplanktons, amphipods, copepods, small crustaceans and shrimp larvae.[5] They are said to lose their bright colour if their dietary requirements are not met.[6]
Behaviour
The species is monogamous and are usually found in pairs.[4][7] They are territorial and will fight with conspecifics unless they are a pair.[3][8][9] The species is shy and hides in small caves when threatened.[9]