dcsimg

Diagnostic Description

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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).
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Recorder
Armi G. Torres
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Morphology

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Dorsal soft rays (total): 6 - 7; Analsoft rays: 11 - 13; Vertebrae: 37 - 39
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Recorder
Armi G. Torres
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Biology

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Oviparous, distinct pairing possibly like other members of the same family (Ref. 205).
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FishBase
Recorder
Otello Giovanardi
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