Mystus impluviatus Ng, 2003

Family:  Bagridae (Bagrid catfishes)
Max. size:  11.96 cm SL (male/unsexed)
Environment:  demersal; freshwater
Distribution:  Asia: Indonesia.
Diagnosis:  Dorsal soft rays (total): 6-7; Anal soft rays: 11-13; Vertebrae: 37-39. Differs from both Mystus castaneus and Mystus nigriceps in having a second posterior fontanel on the supraoccipital. It further differs from Mystus castaneus in having a shallower adipose fin (4.7-6.0% SL vs. 6.1-7.0), smaller serrations on the posterior edge of the pectoral spine (maximum height of serrations 3.6-4.8% of spine length vs 6.9-8.0) and a more deeply forked caudal fin with a more slender upper lobe. Further differs from Mystus nigriceps in having a longer adipose fin base (31.6-36.1% SL vs 26.3-31.4), longer second and third dorsal fin rays, causing the dorsal fin to appear less rounded, and a brown body with a distinct darl triangular patch on the base of the caudal peduncle (vs. greenish gray body with a diffuse dark triangular patch on the base of the caudal peduncle).
Biology:  Oviparous, distinct pairing possibly like other members of the same family (Ref. 205).
IUCN Red List Status: Data deficient (DD); Date assessed: 13 May 2019 Ref. (130435)
Threat to humans:  harmless


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