Gastromyzon introrsus Tan, 2006
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Family:  Gastromyzontidae (Hillstream loaches)
Max. size:  9.44 cm SL (male/unsexed)
Environment:  demersal; freshwater; pH range: 7.7
Distribution:  Asia: Padas and Labuk River basins in Sabah, Malaysia.
Diagnosis:  Dorsal soft rays (total): 7-7; Anal soft rays: 4-4; Vertebrae: 30-33. Can be distinguished from its congeners by possessing the following unique combination of characters: distinct secondary rostrum present; complete post-oral pouch present; body brown with up to 12 cream bars, head dorsum brown with thin cream reticulate pattern; subopercular groove absent; gill slit vertical; sublacrymal groove present; a truncate snout when viewed dorsally; abdomen without scales; lateral line scales 60-68; pelvic fin not overlapping anal fin origin, adpressed dorsal fin not overlapping level of anal fin origin (Ref. 57871).
Biology:  Found in unshaded fast flowing river with a substratum of large rocks and gravel (Ref. 57871).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (123251)
Threat to humans:  harmless
Country info:   

Entered by: Torres, Armi G. - 01.02.07
Modified by: Bailly, Nicolas - 14.08.19

Source and more info: For personal, classroom, and other internal use only. Not for publication.

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