Oneline clingfish (Discotrema monogrammum), first described by Craig & Randall, 2008 is a tiny fish in the family Gobiesocidae (order Gobiesociformes). Adults typically reach 2.30 cm in maximum length. It inhabits marine coastal and open-ocean environments. Recorded depth range: 6 to 20 metres. It occurs in Tropical waters. It is broadly omnivorous, taking invertebrates, plant matter, and detritus. On the IUCN Red List, it is classified as Least Concern.
Dorsal soft rays (total): 8 - 9; Anal soft rays: 6 - 7; Vertebrae: 33 - 34. Distinguished from its congeners in having the following characters: no stripe on head and dorsal surface of the body; pectoral-fin ray count 23-22; vertebral count 33-34 .: elongated.
Behavioural data for Oneline clingfish is currently being reviewed.
Marine; reef-associated; depth range 6 - 20 m . Tropical north to the Philippines, south to the Great Barrier Reef.
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