Gastromyzon Extrorsus (Gastromyzon extrorsus) is a ray-finned fish of the family Balitoridae. It inhabits freshwater waters in benthic environments. This species can reach a maximum total length of 7.7 cm. With a trophic level of 2, it is a herbivore or detritivore. It is assessed as Near Threatened on the IUCN Red List.
Dorsal soft rays (total): 7; Anal soft rays: 4; Vertebrae: 30 - 32. Can be distinguished from other species of the genus by possessing the following unique combination of characters: presence of distinct secondary rostrum; presence of complete post-oral pouch; body brown with up to 9 thin gold bars, head dorsum dark brown with thin gold reticulate pattern; subopercular groove absent; gill slit vertical; sublacrymal groove present; a truncate snout when viewed dorsally; abdomen without scales; lateral line scales 69-77; pelvic fin just touching anal fin origin, adpressed dorsal fin not overlapping level of anal fin origin .: elongated.
Behavioural data for Gastromyzon Extrorsus is currently being reviewed.
Diet information for Gastromyzon Extrorsus is currently being compiled.
Reproduction data for Gastromyzon Extrorsus is currently being compiled.
Freshwater; demersal; pH range: 7.9 - ?. Tropical
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