Omobranchus obliquus

Omobranchus obliquus, the roundhead blenny or the mangrove blenny, is a species of combtooth blenny found in coral reefs in the Pacific and Indian oceans.^[2] It grows to 5 to 10 cm (2.0 to 3.9 in) in length.^[3][4]

Omobranchus obliquus
Conservation status
Least Concern  (IUCN 3.1)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Class:	Actinopterygii
Order:	Blenniiformes
Family:	Blenniidae
Genus:	Omobranchus
Species:	O. obliquus
Binomial name
Omobranchus obliquus (Garman, 1903)
Synonyms
Petroscirtes obliquus Garman, 1903

Habitat

This species can be found in coral reels in both Indian and Pacific oceans,^[2] but it is also spotted in areas of Philippines Islands, Guam, New Guinea, Samoa Islands and many more.^[5] It is also lives in tidal pools, rocky shores,^[4] edges of mangrove swamps, and muddy to sandy bottoms of algae and eel grass.^[6] However, it is an invasive species found at Kaneohe, Oahu at places with fouling habitat that are sheltered.^[7] Often, this species is spotted 2 m (6.6 ft) deep in salty or seawater,^[6] and never seen at depths over 4 m (13 ft).^[8]

Behavior

Despite this species being found in many different territories, it often prefers living in small groups or in isolation,^[6] but they are considered to be juveniles.^{[clarification needed][8]} Like other blenniids, it is a protector and home builder.^[8] Due to its rounded head, long body with brown/greenish and yellow hues, it easily blends in with its surroundings. It also has excellent vision due to its bulbous eyes.^[4]