Chi wriggler (Xenisthmus chi) is a ray-finned fish of the family Xenisthmidae. It inhabits marine (saltwater) waters in benthic environments. This species can reach a maximum total length of 2.1 cm. With a trophic level of 3.1, it is a low-level carnivore, feeding on invertebrates and small organisms. It is assessed as Data Deficient on the IUCN Red List.
Dorsal spines (total): 7; Dorsal soft rays (total): 12; Anal spines: 1; Anal soft rays: 11; Vertebrae: 26. This species is distinguished by the following characters: second dorsal-fin rays I, 12; A rays I,11; predorsal area broadly scaled to just behind vertical through posterior edge of preopercle, a narrow median wedge of scales extending further forward almost to pore D; posterior naris no flap on anterior rim; head and body pale with brown reticulate mottling, forming about 11 X-shaped markings along the sides, between pectoral and caudal-fin bases .: elongated.
Behavioural data for Chi wriggler is currently being reviewed.
Diet information for Chi wriggler is currently being compiled.
Reproduction data for Chi wriggler is currently being compiled.
Marine; demersal. Tropical Indian Ocean: Rowlwy Shoals, Timor Sea.
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