Struktur Jaringan Insang Ikan Ingir–Ingir (Mystus Nigriceps C.V) Di Peraira…

Tapung Kiri River is the upstream part from the Siak River. Tapung Kiri River is affected by the activities of a society that can degrade water quality. The decrease in water quality will negatively affect the health status of Mystus nigriceps. The health condition of fish can be seen from the histological structure of gills, so it needs to be done for the study of the structure of the gills of…