Exostoma effrenum Ng & Vidthayanon, 2014

Family:  Sisoridae (Sisorid catfishes), subfamily: Glyptosterninae
Max. size:  6.5 cm SL (male/unsexed)
Environment:  benthopelagic; freshwater
Distribution:  Asia: Thailand.
Diagnosis:  Distinguished from its congeners by the following characters: eye diameter 11.5-15.0% HL; head width 18.5-19.8% SL; body depth at anus 10.5-12.4% SL; length of adipose-fin base 25.8-29.0% SL; adipose fin distinctly separate from upper procurrent caudal-fin rays; caudal peduncle length 20.5-21.3% SL, depth 5.1-7.0% SL; caudal fin forked; preanal vertebrae 21-22 (Ref. 97386).
IUCN Red List Status: Not Evaluated (N.E.) Ref. (126983)
Threat to humans:  harmless

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